2Specifications are subject to change without notice (29.08.00)
Dupline®is a registered trademark. A product of the CARLO GAVAZZI Group
Mode of Operation
The Dupline
®
Master Module
(DMM) controls a 3-wire bus
with signal, DC-power and
common GND. The DMM is
connected to a standard DC-
supply, which it synchronizes
with the Dupline
®
carrier signal
before it is output to supply.
The synchronization is neces-
sary in order to enable the
Dupline
®
and DC-supply to
share the GND-wire.
The Dupline
®
Master Module is
a Dupline
®
Channel Generator
with the function of a master.
This means that the 128
Dupline
®
I/0’s will be read/writ-
ten by the DMM and then sent
to the PLC.
The DMM can run in two dif-
ferent modes – Normal mode
and split I/O mode. In Normal
mode, Dupline
®
operates as a
peer-to-peer system, where
the channel generator auto-
matically establishes a con-
nection between Dupline
®
inputs and Dupline
®
outputs
which are coded to the same
Dupline
®
address. If e.g. an
input coded for B5 is activat-
ed, the output(s) coded for B5
will also be activated.
Consequently, a Dupline
®
-out-
put can either be activated
through the output-data
received on DMM or by an
active Dupline
®
input coded
for the same Dupline
®
-
address. In "Split I/O" mode,
the channel generator treats
the Dupline
®
inputs and
Dupline
®
outputs indepen-
dently. If e.g. an input coded
for B5 is activated, the DMM
will make the information avail-
able for the PLC (like in normal
mode), but it will not automati-
cally activate the Dupline
®
out-
put(s) coded to B5. The
Dupline
®
outputs are con-
trolled exclusively through the
output data received from the
PLC. In this mode, up to 128
Dupline
®
inputs and 128
Dupline
®
outputs are available,
since an input and an output
coded to the same Dupline
®
address can operate indepen-
dently.
G 3496 0006
Dip-Switch Setting
Sw.2 On: Checksum CRC
Off: Checksum BCC
Sw.4 On: Split I/O Channel Generator Mode
Off: Normal Dupline
®
Monostable Channel
Generator Mode
Sw.5 On: 64 Dupline
®
channels
Off: 128 Dupline
®
channels
Sw.6 On: Maintain data to Dupline
®
receivers in
case of communication failure
Off: Clear data to Dupline
®
receivers in case of
communication failure after 75 Dupline
®
scans
Memory Mapping
Configuration of data file in RSLogix 500 Programming
DATA FILE MicroLogix & SLC
Type: 1000 Type: Other
File 7 9
Type N (Integer) N (Integer)
Elements 16* 16*
Dupline
®
MicroLogix & SLC Dupline
®
MicroLogix & SLC
Channel Channel
Read Write Read Write
A1 N9: 0/0 N9: 8/0 E1 N9: 2/0 N9: 10/0
A2 N9: 0/1 N9: 8/1 F1 N9: 2/8 N9: 10/8
A3 N9: 0/2 N9: 8/2 G1 N9: 3/0 N9: 11/0
A4 N9: 0/3 N9: 8/3 H1 N9: 3/8 N9: 11/8
A5 N9: 0/4 N9: 8/4 I1 N9: 4/0 N9: 12/0
A6 N9: 0/5 N9: 8/5 J1 N9: 4/8 N9: 12/8
A7 N9: 0/6 N9: 8/6 K1 N9: 5/0 N9: 13/0
A8 N9: 0/7 N9: 8/7 L1 N9: 5/8 N9: 13/8
B1 N9: 0/8 N9: 8/8 M1 N9: 6/0 N9: 14/0
B8 N9: 0/15 N9: 8/15 N1 N9: 6/8 N9: 14/8
C1 N9: 1/0 N9: 9/0 O1 N9: 7/0 N9: 15/0
D1 N9: 1/8 N9: 9/8 P1 N9: 7/8 N9: 15/8
Table of the memory mapping to the PLC
(Except MicroLogix 1000)
*Registers 0-7: Dupline®Input Channels A1 to P8.
Registers 8-15: Dupline®Output Channels A1 to P8.
Dupline
®
MicroLogix 1000 Dupline
®
MicroLogix 1000
Channel Channel
Read Write Read Write
A1 N7: 0/0 N7: 8/0 E1 N7: 2/0 N7: 10/0
A2 N7: 0/1 N7: 8/1 F1 N7: 2/8 N7: 10/8
A3 N7: 0/2 N7: 8/2 G1 N7: 3/0 N7: 11/0
A4 N7: 0/3 N7: 8/3 H1 N7: 3/8 N7: 11/8
A5 N7: 0/4 N7: 8/4 I1 N7: 4/0 N7: 12/0
A6 N7: 0/5 N7: 8/5 J1 N7: 4/8 N7: 12/8
A7 N7: 0/6 N7: 8/6 K1 N7: 5/0 N7: 13/0
A8 N7: 0/7 N7: 8/7 L1 N7: 5/8 N7: 13/8
B1 N7: 0/8 N7: 8/8 M1 N7: 6/0 N7: 14/0
B8 N7: 0/15 N7: 8/15 N1 N7: 6/8 N7: 14/8
C1 N7: 1/0 N7: 9/0 O1 N7: 7/0 N7: 15/0
D1 N7: 1/8 N7: 9/8 P1 N7: 7/8 N7: 15/8
Table of the memory mapping to the PLC
(Only MicroLogix 1000)