Rockwell Automation 1756-L55M12, Selection Manual, Page: 39 / 88

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1756-SG001G-EN-P — March 2004
Make sure that your ControlNet network contains at least two nodes in addition to the
redundant chassis pair. And additional node can be:
y
a second 1756-CNBR module in the same remote chassis or in a different
remote chassis
y
any ControlNet device
y
a workstation running RSLinx software
1757-SRM redundancy module
The 1757-SRM redundancy module provides high-speed data transfers between the
primary and secondary chassis. You need one 1757-SRM module per chassis. The
module supports as many as five 1756-CNB modules per chassis.
Connecting to other devices via ControlNet
The RSLogix 5000 Enterprise Series software supports a generic ControlNet module
that allows connections to ControlNet nodes for which there is no specific support
currently available in the programming software. A module configured as a generic
ControlNet module communicates with the controller in the form of input, output,
status, and configuration tags. These tags and their characteristics vary depending on
the type of module.
For example, use the generic module configuration to set up communications between
a ControlLogix controller and a 1203-CN1 ControlNet communication module. Then
use the CIP generic MSG instruction type to send and receive messages from the
1203-CN1 module.
Cat. No. Cable Voltage/Current Power Dissipation, Max.
Current Capacity (Amps)
at 3.3V Backplane Current (mA)
at 5V Backplane Current (mA)
at 24V
1757-SRM
Choose:
y
1757-SRC1 (1m)
y
1757-SRC3 (3m)
y
1757-SRC10 (10m)
y
1757-SRC50 (50m)
y
1757-SRC100 (100m)
30V ac/dc maximum
100 mA maximum
0.75 A 1.0 A 0.09 A
Certifications: UL, CSA (Class I, Division 2, Group A, B, C, D), CE, FM, C-Tick