SIMATIC NET
DP/RS 232C Link
User Description Date 10/20/1999
User Description
Gateway
DP/RS 232C Link
Version: 1.5
Date: 10/20/1999
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10/99 Copyright (C) Siem ens AG 1999. A ll rights reserved.
Disclaimer of liability
Although we hav e checked the contents of t hi s public at i on for agreement
with the act ual hardware and software, responsibility for complete agree-
ment cannot be accepted. The information in t hi s document i s reviewed at
regular interv al s and necessary corrections i ncluded in lat er rel eases. Y our
suggest i ons are wel come.
Copyright
Copyright (C) Si emens A G 1999. All ri ghts res erved
Passing on of t his document, duplication, utilization and revelati on of its
contents is prohi bi t ed unl ess express permi ssion is granted. V i ol ations wil l
be subject to damages . All ri ght s reserved, partic ul arl y in the ev ent a pat-
ent is granted or a ut ilit y model is regist ered.
Subject to change wit hout prior notice
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6.2.1 Introduction of Data Communication by the Low-Priority Station 14
6.2.2 Conflicts 15
6.2.3 Introduction of Data Communication by the High-Priority Station 15
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10.2.1 Plug Connector to External Device 18
10.2.2 PROFIBUS-DP Plug Connector 18
10.2.3 Power Supply 19
10.2.4 Shield Termination 19
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10.3.1 Mounting the Interface Module 19
10.3.2 Wiring 20
10.3.3 Cabling, Shielding and Measures against Interference Voltage 25
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11.1.1 Layout of the Parameterization Telegram (from Octet 8) 29
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12.1.1 Device Data 35
12.1.2 Interface Data 37
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(8JXLGHOLQHV The following information applies to the interface described in this manual.
RQ(0&((&Products bear ing the CE s eal meet the requirem ents of EU guidelines 89/336/EEC
on electromagnetic compatibility and the harmonized European standards con-
tained therein.
The EU dec larations of c onf ormity are available at the f ollowing addr es s for viewing
by responsible authorities in accordance with article 10 of the above stated EU
guidelines.
Siemens Aktiengesellschaft
Bereich Antriebs-, Schalt- und Installationstechnik
ASI 2
Postfach 1954
D-92220 Amberg
$SSOLFDWLRQDUHD The interface modules are designed for use in industrial applications and m eet the
following requirements.
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Industry EN 50081-2 : 1993 EN 50082-2 : 1995
W hen individual approval is granted, the interf ace m odule can also be used in r esi-
dential areas (e.g., residential, business and commercial zones and small busi-
nesses).
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Residential areas Individual approval EN 50082-1 : 1992
Individual approval must be obtained from an appropriate authority or inspection
office. In Germany, this document can be obtained from the Bundesamt für Post
und Telekommunikation and its branches.
$GKHUHQFHWR The interface module complies with the requirements when the following
VHWXSJXLGHOLQHV guidelines are adhered to.
1. Setup guidelines for installation and operating contained in the operating in-
structions
2. The following rules covering the installation of the device and work on s witc hing
cabinets
,QVWDOODWLRQ Interface modules must be installed in electrical equipment rooms or in closed
housings (e.g., control boxes of metal or plastic).
In addition, the device and the m etal control box or at leas t the top hat rail (plastic
box) snapped onto the interface must be grounded.
:RUNRQVZLWFKLQJ To protect the modules from discharge of static electricity, personnel must
FDELQHWV discharge themselves electrostatically before opening the switching cabinets or
control boxes.
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,QWURGXFWLRQ Since the DP/RS232 inter f ac e is not a machine in the sens e of the EU guidelines, it
does not require a declaration of conformity in accordance with EU guideline
89/392/EEC on machines.
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((& EU guideline 89/392/EEC on machines covers the requirements for machines. A
mac hine is def ined as an entity of connected parts or devices . See als o paragr aph
3.1 of EN 292-1.
Since the interface is part of the electrical equipment of a machine, the manufac-
turer of the machine must include it in the declaration of conformity procedure.
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The DP/RS232 interface is used to adapt a serial interf ace on PROF IBUS-DP in acc ordance with EN 50 170.
In this application, it is used as a gateway and operates as a PROFIBUS-DP slave. It can be operated by any
standard master. Two transmission procedures are supported by the serial interface.
• The 3964R procedure widely used by Siemens devices
• A free ASCII protocol with control over Character delay time, Start / End delimiter or constant data length
These two procedures cover the great majority of applications.
The interface consists of the following primary hardware components.
• Floating RS 485 interface to PROFIBUS DP
• SPC3 PROFIBUS ASIC
• 80 C 32 micro-processor
• RAM and EPROM
• Serial interface to the externally connected device
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Configuring with COM PROFIBUS
Process
DP/RS 232 C Link
6ES7158-0AA01-0XA0 x10 x1
serial procedure
4 5 6 3 X 2 X 1 X
PROFIBUS-DP
RS232C
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The PROFIBUS master sends the output data cyclically to the gateway. The gateway compares the data
received from the master with the previous telegram. W hen changes are detected, the gateway sends the
data to the external device in accordance with the selected procedure. W hen no changes are detected, the
telegram is not sent to the external device (i.e., each telegr am is only sent once to the external devic e). The
external device responds in accordance with procedure conventions. The gateway always sends the data
received from the external device to the master without changes.
The gateway writes the data received from the external device in the internal RAM of the SPC3. The updated
data are transferred during the next polling cycle with the gateway.
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Construction of data:
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Userdata Bytes
Triggerbyte and Number of characters are only present when the corresponding flag is set.
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Master Gateway external device
Data telegram 1
Response to telegram 1
Send telegram 2 to the external device
free flowing data from the external device
Data telegram 1
Response to telegram 1
Data telegram 2
Response to telegram 2
Data telegram 2
Response to telegram 2
Send telegram 1 to the external device
free flowing data from the external device
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The following table shows the maximum data which can be transferred. To transfer the data with consis-
tency, one or more buf fers have been s et up on the SPC3 for each servic e. T he num ber of buff ers required
by the SPC3 for this service is indicated in parentheses.
Input data (3) 224 bytes x 3 = 672 3 buffers for consis-
tent data transmission Varies: Maximum
value is given here.
Output data (3) 224 bytes x = 672 3 buffers for consis-
tent data transmission Varies: Maximum
value is given here.
Parameter (1) 9 bytes x 1 = 9 7 bytes are required
by the system. Permanently specified
here
Configuration data (2) 8 bytes x 2 = 16 The I/O configuration
can be written with 4
bytes.
Permanently specified
Diagnosis (2) 8 bytes x 2 = 16 7 bytes of standard
diagnosis without user
diagnosis
Permanently specified
Auxiliary buffer (2 ) 9 bytes x 2 = 18 Sele ct to accommo-
date the longest tele-
gram from configura-
tion, parameterization
and Set Slave Ad-
dress
Permanently specified
Total data
Reserved 1403
1416
The sum of all buffers on the SPC3 m ay not exceed 1472 bytes modulo 8 since each buffer starts at an 8-
byte boundary.
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During the booting phase, the m aster parameterizes and configures the gateway. Data com munication with
the external device is not started until the booting phase has been concluded successfully.
Parameterization
Configuration
E5H
E5H
Diagnostic request
Diagnostic dat a
Data exchange telegram 1
Response to telegram 1
Master Gateway external device
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As the data transmission on PROFIBUS is done cyclically the gateway has to recognize when new data
should be transferred via the serial interface. Normally this is done by comparing the internal data with the
new received data from PROFIBUS. In some cases this procedure doesn´t work, f.e. when the same data
should be send twice or more. The user can influence this behaviour by adjusting the triggerbyte..In this
mode the data is only send when the triggerbyte changes.
In the normal mode the program in the gateway cannot detect whether the gateway has received several
same telegrams. But when the trigger byte mode is switched on the gateway increments the triggerbyte at
anytim e it has received a new telegr am. W hen the trigger byte mode is switched on it is always the first byte
in the data unit.
If the Send-Ready-Trigger is us ed, the lower 7 bits of the Trigger bytes in the input-data is used like des c ribed
above However the MSB toggles each time a send-telegram has finished.
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The m eaning of one bit in the flags register is to tell the fus er program m in the gateway whether the length of
the data to be send is inc luded in the data unit. T he gateway will only send as much data as it is def ined. This
mode only mak es sense in com bination with the trigger byte. In the receive direction the gateway stores the
number of received characters in this byte.
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The 3964 driver pack age is used to tr ansfer data between 2 s erial devices. T o resolve initialization conf licts,
one partner must have high priority and the other low priority.
The interface consists of 3 parts.
• The initialization part
• The cy clical part
• The functions in the interrupt handlers
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The telegram format is described below.
STX, data, DLE, ETX, BCC (1 start bit, 8 data bits, 1 stop bit, even parity)
- The received user data are transferred in both directions without changes (i.e., transparent).
- Data blocking is not provided.
- The user data length is restricted to 224 bytes per telegram.
- Communication is always performed between high and low-priority communication partners.
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When the low-priority station receives an STX in response to an STX, it interrupts its request to send, as-
sumes receiving mode, and acknowledges the received STX with DLE.
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STX
STX
Station assumes receiving mode.
High-priority station wants to send too.
STX
DLE
Data, DLE, ETX, BCC
DLE positive acknowledgment or
NAK negative acknowledgment
A DLE in the data string is doubled and included in the checksum. BCC is calculated from the XOR linking of
all characters.
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tq = Acknowledgment monitoring time (2 sec)
The acknowledgment monitoring time is started after the STX control character is sent. When a positive
ack nowledgm ent is not rec eived dur ing the acknowledgm ent monitoring time, the j ob is repeated a max imum
of 2 times. When the job c ould not be c oncluded pos itively despite 2 r etr ies, the high-prior ity device attempts
to contact the low-priority station by sending the STX control character. The cycle corresponds to tq.
tz = Character monitoring time ( 200 msec)
When the 3964R driver receives data, it monitors the arrival of the individual characters during time tz. When
no character is received during the m onitoring tim e, the procedure c oncludes the transm iss ion. An ack nowl-
edgment is not sent to the other station.
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When acknowledgment is negative or the time is exceeded, a telegram sent by the high-priority station is
repeated twice.
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STX
DLE
Data DLE ETX BCC
DLE positive acknowledgment or
NAK negative acknowledgment
When acknowledgment is negative or the time is exceeded, a telegram sent by the external device is re-
peated twice.
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Protocol: (< Start delimiter>), Net data, < End delimiter> (< 2nd End delimiter>)
The character in brackets are optional.
The Start-End delimiter are transmitted transparently that means they have to be sttored iin the send buffer
by the user.
Receive direction:
W hen the start delim iter is switched on the gateway sxnchronises the gateway with this character. If not the
gateway stores the next received character in the receive buffer. The telegram ends when the end delimiter is
recognized.
send direction:
W hen the flag ´length byte´is set the required length is trans mitted. If not the data is transm itted until the end
delimiter is detected. T he maximum data that can be transm itted always corresponds to the adjusted length
in th configuration telegram.
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In this mode the timeout detection is active and aborts a receive-telegramm if the delay time is exired. This
can be inhibited by switching off the timeout monitoring.
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no protocol
Receive direction:
The rec eived data are stored in the s end buffer until the c haracter delay time has r un out. This tim e m onitor-
ing is adjusted in the parameterization telegram.
send direction:
The data is transmitted transparently.
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In this mode the timeout monitoring must not be switched off!
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The data are transferred transparently without time monitoring. The user specifies the data for the master.
When changes are detected, these data are sent to the ex ternal device without m onitoring. A respons e fr om
the external device is also sent to the master unchanged. Any desired security mechanisms for user data
must be provided by the user.
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0
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3
5
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7
8
9
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DP / RS232C Link
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Device-LED: green È Device is ready for operation
red ÈDevice malfunction. No function possible
off →Device is not turned on
Interface-LED: green Èboth Interfaces ok
yellow ÈInterface 1 unclear (PROFIBUS-DP)
off ÈInterface 2 unclear (RS232C)
red Èboth interfaces unclear
íAddress-switch für PORFIBUS-DP (Address 0 ... 99)
ûLabels
øEarth terminal for shiel d
ùPower supply
îInterface 1: ÈPROFIBUS-DP SLQ68%'IHPDOH
üInterface 2: ÈRS232C SLQ68%'PDOH
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The PROFIBUS addres s must be s et with the two rotary type switches ac c es sible on the f r ont plate. T he tens
digit of the address is set with rotary switch x10. The ones digit is set with rotary switch x1.
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The black dot indicates the respective switch position. The slit on the switch is vertical to the dot.
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The connection cable to the external devic e must be plugged into the plug connec tor accessible on the f ront
plate.
Pin assignment (9-pin sub D male connector)
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1 --
2 RxD Asynchronous serial transmit data RS232
3 TxD Asynchronous serial receive data RS232
4
5 GND Reference potential of control electronics
6
7 RTS Request to Send (not used)
8 CTS Clear to Send (not used)
9
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The plug connector (labeled PROFIBUS-D P) for c onnection to PROFIBUS is loc ated on the underside of the
device.
Pin assignment (9-pin sub D female connector)
Pin No. Name Function
1 Shield
2
3 B Non-inverting input/output signal of PROFIBUS
4
5 M5 DGND - data reference potential
6 P5 5 V supply voltage
7
8 A Inverting input/output signal of PROFIBUS
9
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The device must be supplied with 24 V via a 4-pin, plug-in, screw-type terminal.
The 24 V supply can be looped through.
Pin No. Name Function
1 P24 24 V supply voltage
2 P24 24 V supply voltage
3 M24 0 V supply voltage
4 M24 0 V supply voltage
 6KLHOG7HUPLQDWLRQ
The shield signal for the electronic circuit is connected to the top hat rail with the shied plate. For reasons of
interference immunity, the shield signal for the cable shield is not connected to the shield signal of the elec-
tronic circuit. It must be applied to the screw terminal on the front plate.
 6HWXS*XLGHOLQHV
 0RXQWLQJWKH,QWHUIDFH0RGXOH
Since the interface module has been developed for use in switching cabinets (IP20), it can only be secured
on a standard rail (i.e., low top hat rail in accordance with EN 50022).
0RXQWLQJ
•Hang the module in the top hat rail from the top.
•Swing it down until the sliding switch on the module snaps in.
•Other modules may be installed to the left and right of the interface module.
•At least 5 cm of free space must be provided for heat dissipation above and below the module.
•The s tandard r ail must be c onnec ted with the equipotential bonding rail of the s witching c abinet. The c on-
nection wire must have a cross section of at least PP
.
•A grounding term inal mus t be placed next to the interf ace so that the shield connec tion to the device with
a flexible wire PP
can be kept as short as possible.
'HPRXQWLQJ
•Disconnect the power and signal lines first.
•Then push down the sliding switch on the module with a screwdriver.
•Swing out the interface from the top hot rail.
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Hutschiene
Gerät
Anschaltungsbaugruppe
Schieber Erdungsklemme
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1
2
3
5
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7
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The s tandard rail can also be m ounted vertically s o that the interface m odule is m ounted at an angle of 90°.
Since heat dissipation thr ough convec tion is les s when this type of m ounting is used, the per miss ible ambient
temperature is reduced to a maximum of 40° C.
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 &RQQHFWLRQ7HFKQLTXHV
The following connection techniques must/can be used to wire the interface module.
•Standard screw-type connection (Grounding terminal)
•Plug-in terminals (Connection terminals for the power supply)
•9-pin sub D plug-in connector (PROFIBUS-DP and 3WN6 connection)
a) One line can be connec ted per term inal point for the standar d screw-type terminals . A screwdriver with a
blade width of 3.5 mm is recommended to tighten the screws.
Permissible cross sections of the line:
- Flexible line with core end bushing: 1 x 0.25 to 1.5 mm2
- Solid line: 1 x 0.25 to 1.5 mm2
Turning moment: 0.5 to 0.8 Nm
b) The plug-in terminal strips are a combination of the standard screw-type connection and the plug-in con-
nector. The plug-in connection portion is coded so that it cannot be inserted incorrectly.
c) The 9-pin sub D plug-in c onnec tors are s ecured with two "4-40-UNC" thread screws. A sc rewdriver with a
blade width of 3.5 mm is recommended to tighten the screws.
Turning moment: 0.2 to 0.4 Nm
 56&&RPPXQLFDWLRQ,QWHUIDFH
This interface is equipped with a 9-pin sub D pin strip on the interface.
•Connect the connector of your RS 232C line to the 9-pin sub D pin strip labeled 56&.
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•Connect the other connector of the RS 232C connection line to the appropriate communication plug-in
connector on your communication partner.
•Tighten the screws on the plug connectors with the screwdriver.
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1
2
3
4
5
6
7
8
9GND
TxD
RxD
RT S (Request to Send )
(Empfangssignal)
(Sendesignal)
CT S ( Clear t o Se nd )
5HPHPEHU &76DQG576
The CTS and RTS control signal is not supported.
 352),%86'3&RPPXQLFDWLRQ,QWHUIDFH
%XVOLQHZLWKFRSSHUFDEOH
This interface is located on the inter face m odule in the form of a 9-pin s ub D sock et on the front of the hou-
sing.
•Connect the PROFIBUS connection plug (6ES5... or 6ES7972-...) to the sub D socket labeled
352),%86'3 Remember that the "6ES5..." connection plugs are only suitable for baud rates up to
1.5 Mbit/sec.
•Tighten the screws of the connection plug with a screwdriver.
•If the interface m odule is loc ated at the beginning or the end of the PROFIBUS line, you must als o circuit
the bus terminating resistor integrated in the connection plug. To do this, slide the sliding switch on the
back of the connection plug to the position labeled RQ
If the module is not located at the beginning or the end of the PROFIBUS line, the s liding switch must be
in the position labeled RII.
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)LJXUH352),%86'3FRPPXQLFDWLRQLQWHUIDFH
on
off
on
off
1
2
3
4
5
6
7
8
9
GND
B
Schirm
5V DC
A
(invertiertes Signal) (nicht invertiertes Signal)
%XVZLWK/:/
The PROFIBUS-DP interface can also be used for an LW L connection with the aid of an OLP (Optical Link
Plug) (i.e., the interface provides the maximum current of 80 mA required for the OLP.
•The OLP is available under the following order number: 6GK1502-1AA00.
•Connect the OLP to the interface labeled 352),%86'3.
•Tighten the screw of the OLP with a screwdriver.
•Connect the two LWL connections to the sockets provided on the OLP.
•Set the desired baud rate on the OLP as explained in the description of the OLP.
•A bus terminating resistor is not required for the LWL.
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If you use an O LP, you cannot utilize all the baud rates of fered by the interface (9.6 k bit/sec
to 12 Mbit/sec). Only the baud rates 93.75/187.5/500 or 1500 kbit/sec can be used.
 3RZHU6XSSO\
The devic e m ust be powered with 24 V DC via a 4-pin, plug-in, sc rew-type terminal. T he 24 V DC voltage of
the power pack may fluctuate between 20.4 V and 28.8 V in accor dance with the DIN 19240 s tandar d. Us ing
the 4-pin plug-in, screw-type terminal, the 24 V power can be looped to an additional device. However, re-
mem ber that the s upply voltage is looped via the device (i.e., the looped-through s upply voltage is interrupted
when the screw-type terminal is disconnected).
•Connect the supply voltage to the 4-pin, screw-type terminal in accordance with the labeling on the front
plate of the device.
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24V 0V
RS232C
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The interface module is equipped with two contact points for the shield connection. These two shields are
galvanically is olated inside the device, and ar e c onnected to the equipotential bonding rail outside the m odu-
le. This inc reas es the interf er enc e immunity of the module s inc e the "c able shield c ur rent" whic h can amount
to several amperes due to potential differences between two bus stations does not flow over the device.
The ILUVW shield connection (i.e., s hield for internal f ilter connections) is located on the f loor plate of the inter -
face and is connected DXWRPDWLFDOO\ when the module is placed on the top hat rail.
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 If the device is subjected to high physical or chem ical stress, use of a tin-plated top hat rail
is recommended since it provides better shield connection contact.
Order no: 6ES5 710-8MA11 --->Length of 483 mm for 19-inch c abi net s
6ES5 710-8MA21 ---> Length of 530 mm for 600-mm cabinet s
6ES5 710-8MA31 ---> Length of 830 mm for 830-mm cabinet s
6ES5 710-8MA41 ---> Length of 2 m
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The VHFRQG shield connection ( i.e., cable shields) is located on the front of the module in the form of sc rew-
type terminal. This screw-type terminal is used to ground the cable shields of the bus lines.
•Place a grounding term inal (exam ple of an order no::$3) on the top hat rail directly next to
the module. The grounding terminal automatically establishes a galvanic connection to the top hat rail.
•Connect the shield connection terminal to the grounding terminal using a flexible wire with a diameter of
PP
and as short a length as possible.
•Connect the top hat rail to the equipotential bonding rail as low ohmic as possible. Use a flexible groun-
ding wire with a cross section of at least PP

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Erdungsschelle
Erdungsklemme
PROFIBUS-Kabel
Potenialausgleichsschiene
( D r a ht q u e r s c h n it t > 10 mm2 )
flexibler Draht
Drahtquerschn i tt = 1,5 mm2
0
1
2
3
5
46
7
8
90
1
2
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7
8
9
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on
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"Verbindungskabel"
zum Kommunikat ions-
partner
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 &DEOLQJ6KLHOGLQJDQG0HDVXUHVDJDLQVW,QWHUIHUHQFH9ROWDJH
This chapter describes how to arr ange the bus, signal and power cables so that your s ystem will conf orm to
EMC requirements.
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D,QVLGHDQG2XWVLGH&DELQHWV
To m eet EMC requirem ents, we recom m end dividing the c ables into the f ollowing groups and installing thes e
groups separately from each other.
Ø Group A: • Shielded bus and data lines (e.g., for PROFIBUS-DP, 3WN6, printer and so on)
• Shielded analog lines
• Unshielded lines for direct current ≤ 60 V
• Unshielded lines for alternating current ≤ 25 V
• Coaxial lines for monitors
Ø Group B: • Unshielded lines for direct current ≥ 60 V and ≤ 400 V
• Unshielded lines for alternating current ≥ 24 V and ≤ 400 V
Ø Group C: • Unshielded lines for direct current > 400 V
Ø Group D: • Lines for SINEC H1 (Ethernet)
Using the following table, you can determine the requirements for installing the cable groups by combining
the individual groups.
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Group A
ô í ÷
Group B
ô í ÷
Group C
í í ÷
Group D
÷ ÷ ÷
Cables can be i nstalled i n common bundles or cable duct s.
ôCables must be i nstalled i n separate bundles or cable duct s (withi n a mini mum di stance).
íInside cabinet s, cables mus t be installed in separate bundles or c able ducts. Outside cabinet s but inside bui ldings, cabl es mu st
be instal l ed i n separate cabl e racks at a minimum distance of 10 cm.
÷Cables must be i nstalled i n separate bundles or cable duct s at a mi ni mum dist ance of 50 cm.
E2XWVLGH%XLOGLQJV
If possible, install cables located outside buildings on metal cable supports. Provide galvanically isolated
connection of the joining points of the cable supports, and ground the cable supports. W hen cables are in-
stalled outside buildings, you must also provide required lightning protection and grounding measures.
Applicable in general:
• /LJKWQLQJSURWHFWLRQ ØIf cables and lines for the interface are to be installed outside buildings,
measures for internal and external lightning protection must be provided.
Ø Outside buildings, install the cables in one of the following.
- Metal pipes grounded on both sides
- Concrete cable ducts with armouring connected throughout
Ø Use one of the following methods to protect signal lines from overvoltages.
- Varistors
- Overvoltage diverter filled with inert gas ("ÜsAg")
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Ø Install these protective elements where the cable enters the building.
•(TXLSRWHQWLDOERQGLQJ Ø Provide sufficient equipotential bonding between the connected devices.
 (TXLSRWHQWLDO%RQGLQJ
Differences in potential between separate system parts can occur under one of the following conditions.
•Programmable controllers and I/O devices are connected via non-floating couplings.
•Cable shields are applied on both sides and grounded on different system parts.
Differences in potential can be caused by differing power supplies, for example. These differences m ust be
reduced by using equipotential bonding lines so that the electronic components will function correctly.
The following points apply to equipotential bonding.
•The effectiveness of equipotential bonding increases the lower the impedance of the equipotential bonding
line is.
•If shielded signal lines which are connected on both sides with ground/protective conductor are installed
between the affect ed system parts , the impedanc e of the additional equipotential bonding line may not ex-
ceed 10% of the shield impedance.
•The c ross sec tion of the equipotential bonding line m us t be dim ensioned f or the m ax im um equalizing c ur-
rent. The following cross sections have proved effective in actual practice.
- 16 mm2 Cu for equipotential bonding lines up to 200 m in length
- 25 mm2 Cu for equipotential bonding lines over 200 m in length
•Use equipotential bonding conductors of copper (Cu) or galvanized steel. Equipotential bonding conduc-
tors m ust be connected over a large surface to ground/protective conductor and protected against corro-
sion.
•The equipotential bonding c onductor s hould be installed s o that ver y sm all s ur f aces between equipotential
bonding conductor and signal lines are included.
 &DEOH6KLHOGLQJ
Shielding is intended to reduce (i.e., attenuate) magnetic, electrical or electromagnetic fields of interference.
Interfer ence curr ents on cable shields are diverted to ground via the sh ield rail which is conduc tively c onnec-
ted to the housing. A low-impedance connection to the protective conductor is particularly important so that
these interference currents do not become a source of interference themselves.
If possible, use only cables with shield braiding. The covering density of the shield should be more than 80%.
Avoid using foil s hields s ince pulling and pres sure at the m ounting points can dam age the f oil very easily and
thus reduce the effectiveness of the shield.
Cable shields should us ually be applied on both sides. Two-sided shield c onnection is the only way to achie-
ve good interference suppression in high-frequency areas.
Only under exceptional conditions m ay the shield be applied on only one side. However, this only attenuates
the lower frequencies. A one-sided shield connection may be better under the following conditions.
•Installation of an equipotential bonding line is impossible.
•Analog signals (several mV or mA) are being transmitted.
•Foil shields (i.e., static shields) are being used.
Always use m etallic or m etallized plug connectors for data lines f or se rial couplings . Secur e the shield of the
data line to the plug’ s housing. Do QRW apply the shield to PIN1 of the plug connector strip.
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 If there are potential differences between the grounding points, an equalizing current can
flow over the shield which is connected on both sides. If this is the case, install an additional
equipotential bonding line.
Remember the following points when working with shields.
•Use metal cable clamps to secure the shield’ s braiding. The clamps must surround the shield over a large
surface and provide good contact.
•Apply the shield on a shield rail directly where the line enters the cabinet. Continue the shield up to the
module, but do QRW apply it again there.
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Shielded data lines and unshielded power supply lines (< 60 V DC) are led to the interface m odule and c on-
nected. All cable shields must be grounded on both sides so that the interface module meets all required
EMC limit values.
•The PROFIBUS-DP cable shield must be applied to the equipotential bonding rail where it enters the ca-
binet.
•The shielded RS 232C connec tion cable m ust be grounded via the shield term inal on the interf ace m odu-
le. Use a flexible wire with a cross section of at least PP
and as short a length as possible.
•The other side of the cable shield of the RS 232C connection cable must also be grounded.
See also chapter 0 10.3.2.5 Shield Connection.
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5HSUHVHQWDWLRQRIWKH'DWDRQ352),%86'3
All standard PROFIBUS-DP masters can exchange data with the gateway. The data structure permits very
simple master interfaces to be used.
 3DUDPHWHUL]DWLRQ
The m aster uses the parameterization telegram to identify its elf to the slave and specif y the m ode which the
slave is to use.
The following parameterization capabilities are standard.
• The slave operates with/without the watchdog. This is requir ed for sec urity r easons to determ ine whether
a master is still active.
• Spec if ic ation of the TSDR (i.e., minimum tim e before which a slave c annot res pond af ter adherenc e to the
bus quiet time)
• Freeze/sync mode (e.g., for drives and counters)
• DP slave is/is not enabled for other masters.
• Specification of a group allocation for global control telegrams. Each bit stands for one group.
• Master address for clear identification
• User-related parameters (e.g., reaction when master assumes clear state)
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In mos t cases the user c onstructs the param eterization telegram by using a com missioning tool ( for ex am-
ple COM PROFIBUS)
If this methode is not possible the user data of the parameterization telegram is shown here.
Octet Bitposition Designation
7 6543210
80 0000WD_Base Dis_Stop Dis_Start Spec_User_Prm_Byte_1
9 reserved Parity reserved Baudrate Spec_User_Prm_Byte_2
 3URWRFROGHIDXOW5 6SHFB8VHUB3UPB%\WHB
 )ODJVGHIDXOWDOOH 6SHFB8VHUB3UPB%\WHB
 &KDUDFWHUGHOD\WLPH7=GHIDXOWPV 6SHFB8VHUB3UPB%\WHB
 (QGGHOLPLWHU 6SHFB8VHUB3UPB%\WHB
 QG(QGGHOLPLWHU 6SHFB8VHUB3UPB%\WHB
 6WDUWGHOLPLWHU 6SHFB8VHUB3UPB%\WHB
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%\WH6SHFB8VHUB3UPB%\WHB
Bit Name Meaning Default Status
0 Dis_Startbit This bit is used to disable start bit
monitoring on the receiver. Dis_Startbit = 1
(i.e., start bit monitoring is disabled)
1 Dis_Stopbit This bit is used to disable stop bit
monitoring on the receiver. Dis_Stopbit = 0
(i.e., stop bit monitoring is not disabled)
2 WD_Base This bit specifies which time base is to
be used to pulse the watchdog.
WD_Base = 0: Time base of 10 msec
WD_Base = 1: Time base of 1 msec
WD_Base= 0
(i.e., time base is 10 msec)
3-7 res Must be 0 0
%\WH6SHFB8VHUB3UPB%\WHB
Bit Name Meaning Default Status
0,1 Parity Setting of the parity 0= no parity, 1= even parity, 2= ODD
Parity
2 Prio Setting of the priority of the gateway 0= SS priority of gateway low
1= SS priority of gateway high
For 3964R procedure only
3 Mode Setting of the protocol 0= 3964R protocol
1= Free ASCII protocol
4 - 6 Baud Setting of the transmission speed 0 = 300 baud
1 = 600 baud
2 = 1200 baud
3 = 2400 baud
4 = 4800 baud
5 = 9600 baud
6 = 19200 baud
7 Flags 3964R is to operate without timeout
monitoring for test purposes. 0=Disable timeout
1= Enable timeout
%\WH3URWRFROVHOHFWLRQ
Protocol Value
3964R 0
Character delay time 1
Start-/End delimiter 2
Number of Characters 3
reserved 4-255
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Bit Name meaning state
0 Trigger-Byte Using Triggerbyte-Mode 0=no Triggerbyte
1= using Triggerbyt es
1 Start cha-
racter Us i ng Start del i miter (only St art-/End
charact er mode) 0=swi tch off Start del i mit zer
1=switch on Start delimit er
2 2nd End
delimiter Number of end del i mit ers 0=one end delim i ter
1=two end delimi t ers
3 Lengthbyte Using the l engt h byte 0= no length byte
1= lengthbyte i s used
4 Priorit y Priorit y duri ng i n i tialisation c onflic t (only
3964R) 0= Interface Priority is low
1= Interface Priority is high
5 Disable TO switch off Tim eout-Monitoring f or t est pur-
poses 0=Tim eout moni t ori ng on
1= Timeout monit oring off
6 Send-Done-
Detection The MSB of the triggerbyt es toggles eac h
time a send-tel egram has been f i ni shed .
Requires Triggerbyt e!
0=Send-Done-Detection off
1=Send-Done-Detection on
7Ext_Diag
disable When communicat i on to external device is
not ok, do: 0 = set Ext_Diag
1 = do not set Ext_Diag
%\WH&KDUDFWHUGHOD\WLPH
Character delay time 10 ms. valid range: 2 - 255 (20ms up to 2,55s)
%\WH(QGGHOLPLWHU
1. character of the end delimiter
%\WHQG(QGGHOLPLWHU
2. character of the end delimiter
%\WH6WDUWGHOLPLWHU
character of the start delimiter
The respons e of a s lave to a parameterization telegram is E5H (i.e., s hort ac knowledge). T he s lave does not
indicate an erroneous parameterization until the master sends a diagnostic request later. In this case, the
gateway does not begin data communication.
 The time base for the watchdog tim e is specified as 10 msec in oc tets 2 and 3. One octet should at least
contain the value 2 as the time base, and the other octet should at least contain the value 1 to ensure that the
watchdog time does not immediately expire. Due to 12 Mbaud technology, a time base of 1 msec is specified
for some ASICs in the user parameters.
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After parameterization, the master must send a configuration telegram to the appropriate slave. After re-
ceiving the configuration telegram, the slave compares the sent configuration with the stored configuration.
Up to 16 bytes or words can be written in an octet of the data unit (i.e., DU). Inputs and outputs with the
sam e form at can be combined in one oc tet. Otherwise, use as m any octets as you have bytes /words which
cannot be combined in one octet.
The ac knowledgment of a configuration telegram is E5H. If the slave detec ts differenc es from the entries in
the GSD file, it reports the incorrect conf iguration to the master when a diagnos is is requested later. In this
case, the slave is not ready for user data communication.
Configuration telegram
Octet 1 0
Configuration byte 1
Octet 2 0
Configuration byte x
Layout of an octet in the configuration telegram:
70
Length of the data
00 = 1 byte/word
15 = 16 bytes/words
Input/output
00 = Spec. identifier format
01 = Input
10 = Output
11 = Input, output
0 = byte, 1 = word
0 = Consistency of byte/word
1 = Consistency of entire length
W hen the c urrent conf iguration is unk nown to a class-2 m aster, the m aster c an read the configur ation of the
slave with "Get_Cfg" and then s end it to the s lave f or c hec k ing. This ser vice is par tic ularly usef ul f or modular
systems.
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 'LDJQRVLV
Diagnostic data are high- priority data. The gateway generates an ex ternal diagnosis when the c onnection to
the external device is faulty. Additional the Bit Ext_Diag is set if not inhibited.
5HSUHVHQWDWLRQRIWKHPHVVDJHVLQWKHH[WHUQDOGLDJQRVWLFE\WH
The diagnostic information of a DP slave consists of 6 bytes of diagnostic information and any user-related
diagnostic information.
7HOHJUDPIRUUHTXHVWIRUGLDJQRVLV
Octet 1 0
Diag. station does not exist. Master sets.
Diag.station_not_ready: Slave is not ready
for data communication.
Diag.cfg_Fault
Configuration data are incorrect.
Diag.ext_diag
Slave has external diagnostic data.
Diag. not supported: Requested function is
not supported by slave.
Diag.invalid_slave_response. Slave sets
permanently to 0.
Diag.prm_fault
Wrong parameterization (e.g., ident number,
etc.)
Diag.master_lock. Master sets.
Slave is parameterized by another master.
Octet 2 0
Diag.Prm_req
Slave must be parameterized again.
Diag.Stat_diag
Static diagnosis (diagnostic bits byte)
Fixed at 1
Diag.WD_ON
Watchdog active
Diag.freeze_mode
Freeze command received
Sync_mode
Sync command received
Reserved
Diag.deactivated. Master sets.
Octet 3 0
Reserved
Diag.ext_overflow
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Octet 4 0
Diag.master_add: Master address after
parameterization. FF = No parameterization.
Octet 5 0
Ident number high byte
Octet 6 0
Ident number low byte
Octet 7 0
External diagnosis: Header length
Octet 8 0
1 = Interface to ext. device unclear
 'DWD([FKDQJH
After the m as ter rec ognized the state for data exc hange the m aster only sends telegram s for data exc hange.
The received input and output data is either stored in the dedicated area in the m aster or the user program
has to handle the data by using Function blocks.
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The following table provides the technical data of the interface module.
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1R 3DUDPHWHU 'DWD ([SODQDWLRQ
1 Location of use Switching cabinet
Ø
Mounting on top hat rai l
2 Protection rating IP20
Ø
Foreign bodies and water in acc.
w. IEC 529 (DIN 40050)
3 Protection class 3
Ø
IEC 536 (VDE 0106-1)
Ø
Supplied w. low safet y voltage
4 Cooling Convection Additional cooling not requi red
5 Lifespan 10 years
6 Housing dimensions 95 mm x 70 mm x 86 mm H x W x D
Mounting position Vertical
Can be mounted in rows
Ø
Other m ounting posit ions possibl e
under reduced max. permissible
operating temperature
7 Weight 0.3 kg
8 Operating temperature 0° C ... + 60° C
0° C ... + 40° C
Ø
Vertic al position i s preferred.
Ø
Horizontal mounti ng
9 Storage/transportation tempe-
rature - 40° C ... + 70° C
10 Air pressure Operation
Transportation 795 hPa to 1080 hPa
660 hPa to 1080 hPa
11 Installation height 2000 m
4000 m
Ø
No restrictions
Ø
W ith restrictions:
- Ambi ent temperature ≤ 40° C
12 Relative humidity 5% to 95%
Ø
SN 31205 ( IEC 68-2-30 )
Ø
No condensat i on
13 Pollutant concentration
Ø
SO2 < 0.5 ppm; relative humidity <
60%
Ø
H2S < 0.1 ppm ; relative hum idit y < 60
%
Ø
SN 31205 ( IEC 68-2-60 )
 FODVVRIXVH&&
Ø
No condensat i on
14 Particles/dirt
Ø
Sand and dust may not penetrate the
device.
15 External supply voltage 20.4 V DC to 28.8 V DC
Ø
Standard power pack in acc. w.
DIN 19240
16 Current consumption at 24 V
DC 150 mA (ty p.), 180 mA (max.)
17 Powering on the PROFIBUS
interface 5 V DC/ 80 mA (max.)
Ø
Suitable for c onnection of an OLP
(Optical Li nk Plug)
18 Protection against polarity re-
versal Yes
Ø
Device will not function anyway.
19 Short circuit protection Yes
20 Overload protection Multi-fuse 0.5A
Ø
Self-res toring fus e
Ø
Reset with power OFF
21 Undervoltage recognition (UPS) ≤ 14 V DC
Ø
Min. of 50 msec until RESET
22 Power failure backup ≥ 20 msec
Ø
UPS is al ready triggered before at
Ue < 14 V.
Ø
Device is full y f unctional .
23 Isolation voltage 500 V DC
Ø
IEC 1131-2
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The following table lists all tests, standards and regulations to which the interface module was subjected.
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1R 3DUDPHWHU 'DWD ([SODQDWLRQ
1 Oscillation test • 5 Hz ≤ f ≤ 26 Hz, ampl i t ude = 0.75 mm
• 26 Hz ≤ f ≤ 500 Hz, acceleration. = 20
m/sec2
È
Frequency pass : 1 octave/min
È
10 frequency pas ses in x, y, z
Ø
SN 31205 ( IEC 68-2-6-Fc sine)
 FODVVRIXVH00
2 Shock test • S hock form = half -sine
• Accel eration = 15 g (150 m /sec2)
• Shock duration = 11 m sec
È
3 shocks in +/- direction in x, y, z
Ø
SN 31205 ( IEC 68-2-27-Ea)
 FODVVRIXVH00
3 Fall test 1 m height
Ø
SN 18013
4 Bending and extraction test • Screw size : M3
--> Turning moment : 0.5 to 0. 8 Nm
• Wire cross section : 0. 75 / 1.5 / 2.5 mm2
AW G : 18 / 16 / 14
• W ire form : rigid, flexible
Ø
IEC 947-1 (screw connections)
5 Climate test:
- Cold
- Dry heat
-Temperat ure c hange
- Humidi ty, heat
• 0° C / 16 h
• 60° C / 16 h
• -25° C to 55° C / 1° C/min / 2 cycles
• 55° C / 90 to 95% / 12+12 h / 2 cycles
Ø
SN 31205 ( IEC 68-2- 1-Ad,
IEC 68-2- 2-Bd,
IEC 68-2-14-Nb,
IEC 68-2-30-Db )
 FODVVRIXVH..
6 Pollutant concentrations • SO2 < 0.5 ppm; relat i ve humidi t y < 60%
• H2S < 0.1 ppm; relat i ve humidity < 60%
Ø
SN 31205 ( IEC 68-2-60 )
 FODVVRIXVH&&
Ø
No condensat i on
7 ESD 8 kV Air discharge
6 kV Contact discharge I EC 1000-4-2 Accuracy 3
8 Electromagnetic fields 10 V/m IEC 1000-4-3 Accurac y 3
9 BURST 2 kV / 5 kHz supply voltage
2 kV / 5 kHz data lines IEC 1000-4-4 Accurac y 3
10 Interference emission Limit value class A EN 55011
11 Certifications • UL
• CSA
• CE seal
• PROFIBUS cert ification
Ø
Underwriters Laboratories
Ø
Canadian Standards Association
Ø
Certifi c ation of c onformi ty
Ø
PROFIBUS User Organization
12 Standards, regulations • DIN 40050 ; I EC 529
• VDE 0106, prot ection rat i ng 3
• VDE 0160, t o extent appl i c abl e
• VDE 0110 - Insulation group IIIa, IIIb
- Degree of soil 3
• IEC 68
• IEC 721-3-1 / -3
• IEC 1131-2
• IEC 1000-4-2 / -3/ -4/ -5/ -6
• EN 55011 , DIN VDE 0875-11
• EN 50022
• EN 61131-2
• UL 508
• CSA 22.2-14
Ø
IP protection rat i ngs
Ø
Protection against touch, intrinsic
isolation
Ø
High-voltage pl ant s
Ø
Insulat i on coordinati on
Ø
Envir. c ond.: Measuring procedures
Ø
Envir. cond.: Definitions
Ø
PLC interface s tandard
Ø
EMC requirem ents
Ø
EMC emi ssion
Ø
Standard rail (top hat rail)
Ø
PLC I/O devices
Ø
UL for indust ri al controllers
Ø
CSA fo r i ndustrial devi ces
13 Siemens standards • SN 18013
• SN 18012
• SN 36350
• SN 31205
Ø
Packagi ng and fall test
Ø
Labeling of t he pac kages
Ø
Recycling regul ations
Ø
Environm ental condi t i ons
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8VHU'HVFULSWLRQ Release: 1.5 Page 37
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The f ollowing table lists the tec hnic al data of the inter f aces on the devic e. The data have been obtained f r om
the applicable standards.
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,QWHUIDFH'HVLJQDWLRQ 352),%86'3 56&
1R
3K\VLFDO,QWHUIDFH 56 56&
1 Standard EIA standard DIN 66020
2 Type of transmission Symmetric
Asynchronous
Serial
Semi-duplex
ØDifferential signal
Asymmetric
Asynchronous
Serial
Full-duplex
Ø/HYHO
3 Transmission procedures Master/slave Master/slave
4 Number of stations : - Senders
- Receivers 32
32 1
1
5 Cable length: - Maximum
- Depends on baud rate
1200 m
93.75 kBd
È
1200 m
187.5 kBd
È
1000 m
500 kBd
È
400 m
1.5 MBd
È
200 m
>1.5 MBd
È
100 m
15 m
No
6 Bus topology Line Point-to-point
7 Transmission speed: - Maximum
- Standard values
12 Mbit/sec
9.6 kbit/sec
19.2 kbit/sec
93.75 kbit/sec
187.5 kbit/sec
500 kbit/sec
1.5 Mbit/sec
3 Mbit/sec
6 Mbit/sec
12 Mbit/sec
19.2 kbit/sec
9.6 kbit/sec
19.2 kbit/sec
8 Sender: - Load
- Max. voltage
- Signal without load
- Signal with load
54 Ω
-7 V to 12 V
± 5 V
± 1.5 V
3 to 7 kΩ
± 25 V
± 15 V
± 5 V
9 Receiver: - Input resistance
- Max. input signal
- Sensitivity
12 kΩ
-7 V to 12 V
± 0.2 V
3 to 7 kΩ
± 15 V
± 3 V
10 Sending oper. (SPACE): - Voltage level
- Logic level -0.2 to +0.2 V
0+3 to +15 V
0
11 Sending pause (MARK): - Voltage level
- Logic level +1.5 to +5 V
1-3 to -15 V
1
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Page 38 Release: 1.5 8VHU'HVFULSWLRQ
10/99 Copyright (C) Siem ens AG 1999. A ll rights reserved.
&RPPLVVLRQLQJ*XLGHOLQHV
&DXWLRQ
The DP/RS232C interface 0/)%
(6$$;$ may only
be commissioned by trained person-
nel under observance of safety
regulations.
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The following components are required to commission
the DP/RS232C Link interface.
• DP/RS232C Link interface
• Connection cable from the DP/ RS232C Link interface
to the process
• Connection plug for connection of PROFIBUS to the
interface
• PROFIBUS cable. 7KLV FDEOH KDV XVXDOO\ DOUHDG\
EHHQLQVWDOOHGRQVLWH
• 24 V DC voltage supply (DIN 19240)
• Floppy disk with type or GSD file and operating in-
structions HQFORVHGZLWKWKHLQWHUIDFH
• Configuration tool for the PROFIBUS master &20352),%86IRU6LHPHQVPDVWHU
0RXQWLQJ
The DP/RS232C Link interface has a protection rating of IP20 and can be installed in the switching cabinet. The device
is designed to be snapped onto a 35-mm top hat rail.
&RPPLVVLRQLQJ
To ensure correct operation of the interface, performance of the following commissioning steps is mandatory.
•Set PROFIBUS address
ØUse the two rotary-type switches labeled "$GGUHVV" on the front of the interface to set the PROFIBUS address.
Use the rotary switch labeled "[" to set the tens position and the rotary switch labeled "[" to set the ones po-
sition.
&DXWLRQ
The PROFIBUS address set with the rotary switches must match the address configured with COM
PROFIBUS.
•PROFIBUS connection
ØConnect the device to the PROFIBUS on the interface labeled 352),%86'3.
•Process device connection
ØConnect the process device to the interface labeled 56&.
ØRead the operating instructions for commissioning the process device.
•Supply voltage connection
ØConnect the 24 V direct current to the terminals provided for this purpose.
•Shield connection
ØConnect the protective conductor to the terminals provided for this purpose.
ØGround the top hat rail on which the interface was snapped on.
•Configuration with COM PROFIBUS
ØTo configure, use COM PROFIBUS (for Siemens devices) or another configuration tool suitable for the
PROFIBUS master you are using. The required GSD file has already been defined.
ØIf the required GSD file was not included with your configuration tool, copy this file from the included floppy disk
or download it from mailbox no. ++ 49 911 73 79 72.
0
1
2
3
5
46
7
8
90
1
2
3
5
46
7
8
9
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56&
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8VHU'HVFULSWLRQ Release: 1.5 Page 39
Copyright (C) Si emens A G 1999. All ri ghts res erved. 10/99
/LVWRI5HODWHG/LWHUDWXUH
For a quick and intensive introduc tion to the subj ect of PRO FIBUS-DP and how the available ASICs operate,
we recommend "The Rapid Way to PROFIBUS-DP" by Manfred Popp. The book is available from the
PROFIBUS User Organization under order no. 4.071.
Address:
PROFIBUS Nutzerorganisation e.V.
Haid-und-Neu-Str. 7
76131 Karlsruhe
Tel: 0721 9658 590
Siemens AG
Division Automation Engineering
Combination Engineering Siem ens AG
PO Box 23 55, D-90713 Fuerth/Germany Subject to change without pri or notice
SIEMENS Aktiengesellschaft Printed in the Fed. Rep. of Germany