Allen-Bradley 1756-DHRIO User Manual

Publication 1756-UM514B-EN-P - February 2003
Messaging Between ControlLogix Controllers and PLC-5s or SLC-5/04s 6-5
Set the Module Switches
In this application, you must set switches on the 1756-DHRIO
modules for DH+ and the switches on the 1756-CNB modules to the
correct node addresses. The 1756-CNB module in system #1 uses
node address 22 and the 1756-CNB module in system #2 uses node
address 23.
For more information on setting switches on the 1756-DHRIO module,
see
page 1-5. For more information on setting the switches on the
1756-CNB module, see page 4-9.
Set-Up a Routing Table for the 1756-DHRIO Module
Use RSLinx to set-up a routing table for the 1756-DHRIO module in
ControlLogix system #2.
Figure 6.4 shows the routing table necessary
for this example.
Figure 6.4
For more information on how to set-up a routing table, see page 3-5
or the RSLinx online help.
IMPORTANT
The switches on the 1756-CNB modules must match
the information in the 1756-DHRIO routing table.
1
2
Remote DH+ Messaging
described on page 2-10

Allen-Bradley 1756-DHRIO Specifications

General

Model	1756-DHRIO
Category	Control Unit
Catalog Number	1756-DHRIO
Number of Ports	2
Shock	30 g
Vibration	5 g
Product Type	Communication Module
Communication Protocols	Data Highway Plus, Remote I/O
Port Type	DH+ and RIO
Data Highway Plus Baud Rates	57.6 kbps, 115.2 kbps
Baud Rate	57.6 kbps, 115.2 kbps, 230.4 kbps
Operating Temperature	0 to 60 °C (32 to 140 °F)
Storage Temperature	-40 to 85 °C (-40 to 185 °F)
Relative Humidity	5 to 95% (non-condensing)
Module Location	Any slot in a 1756 chassis
Isolation Voltage	50 V continuous
Certifications	CE, C-Tick, UL