Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
System 50
System 50
APPLICATIONS
DIGITAL INPUTS/OUTPUTS
The ProMux® network interface mates with
any of our 8, 16, or 24 digital module racks.
Plug Grayhill OpenLine®, standard, miniature,
or G5 digital I/O modules into the racks. They
can be mixed in any combination. Connect the
ProMux® boards serially to a host computer
and then issue commands to monitor the
inputs or control the outputs. Commands are
included which permit you to:
•Read the ON/OFF status of inputs
•Determine the width of input pulses
•Count pulses at frequencies up to 400Hz
•Detect rising or falling edges
•Latch momentary input events
•Turn outputs ON or OFF individually or in
groups
•Pulse-width modulate outputs
•Provide delayed-on or delayed-off outputs
•Generate pulses or squarewaves
COMMUNICATIONS
The host computer and ProMux® boards
communicate serially over two pair of twisted
wires per RS-422/485 in either a multi-drop or
repeat configuration. They use an industry
standard ASCII string format to code the
command and response messages.
Application programs running on the host
computer issue commands and then await
responses from the ProMux®
boards. The
communications speed is selectable between
300 baud and 38.4 KBaud. Each controller on
the network is assigned a unique base address
from 0 to 255. You can separate boards from
one another by as much as 4,000 feet.
SOFTWARE
Software drivers are available which simplify
the task of interfacing programs written in
Visual Basic or C to the ProMux® network.
Sample programs and the set-up and debug
utilities are included on the disk with the drivers.
Interface drivers for most third party software
packages are available through their
distributors.
OTHER FEATURES
All ProMux®
boards are thoroughly tested and
shipped in static proof boxes.
Because space inside your enclosure can be
limited, we offer numerous rack plug-in
configuration options. For applications requiring
even more mounting flexibility, the ProMux®
boards can be connected to racks with a
ribbon cable up to six feet long.
If you do not have an RS-422 or RS-485 serial
port on your PC, we offer a variety of RS-232
to RS-422/485 converters (see page L-103)
“Communications Converters” for technical
and ordering information.
NETWORK INTERFACES
ProMux® (Optomux)
FEATURES
•Each Board Controls Up to 24
Standard, Mini, G5 or OpenLine®
Digital Modules
•Up to 256 Addressable ProMux®
Boards Separated by 4,000 Feet
•100% Optomux Compatible,
Plus Extra Commands
•Communications at Speeds From
300 Baud to 38.4 KBaud.
•Transient Protection on
Communications Lines
•Direct Plug-In or Ribbon
Cable Interconnection
•BASIC and C Drivers for the PC
Stand Alone Control
Local Control & I/O
Remote I/O
Distributed I/O
SCADA
RTU
L-99
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
System 50
System 50
3.50 (88,9) CONNECTION
FOR RS-422/485
WIRES
2.625
(66,68)
0.275
(7,0)
0.25
(6,4) 2.25 (57,1)
NOTE: FRONT LEGS ARE
INSTALLED ONLY ON 72-PMO-3
0.67 (17,0) 2.66 (67,5)
4.00 (101,6)
4.00
(101,6)
4.50
(114,3)
HEADER CONNECTOR ON 72-PMO-3
MATES WITH A RIBBON CABLE
PLUG CONNECTOR ON 72-PMO-1
MATES DIRECTLY WITH A RACK
STANDOFF I.D. 0.15 (3,8) DIA.
CLEARANCE FOR #6 SCREW
1.35
(34,29)
0.55 (13,97) PIN 1
1.5 (38,1)
DIMENSIONS In inches (and millimeters)
Unless otherwise specified, tolerances are ± 0.010 (0,25).
SPECIFICATIONS
Supply Voltage: 4.5 to 5.5 Vdc
Supply Current (less modules): 300 mA
max.
Operating Temperature: 0° to 70°C
Humidity: 95% non-condensing
Microprocessor: 68HC11 @ 7.4 MHz
Connections:
RS-422/485: 12 position terminal block
Rack: 50-pin female plug connector or 50-pin
male header connector
Serial Data:
Format: 10-Bit ASCII, 1 Start, 1 Stop, 8 Data
Integrity: Message Checksum or 4 Pass + CS
Range of Network: Compliant with EIA/TIA
RS485-A (1 standard load per controller).
Operates in multi-drop or repeat mode. 256
DIP switch selectable addresses. May require
RS485 repeaters for lengths over 4,000 feet or
more than 32 controllers in multi-drop mode.
Consult factory for special configurations.
Part Number Description
Network Interfaces
72-PMO-1 Plug connector for direct rack connection
72-PMO-3 Header connector for ribbon cable to rack connection
User’s Manuals and Software
72-UMO Manual with no software, for evaluating boards for purchase
72-UMO-C Manual with Basic and C software drivers and utilities
72-UMM-DDE Optomux DDE server for Windows 3.1
72-UMM-DLL Optomux DLL for Windows 3.1
72-UMM-DLL32 Optomux DLL for Windows 95/98/NT
ORDERING INFORMATION
Available from your local authorized Gray-
hill Distributor. For prices and discounts, contact your local
sales office, an authorized Distributor, or
Grayhill.
L-100
