236 Rockwell Automation Publication 1769-UM021I-EN-P - May 2018
Chapter 9 Use I/O Modules with CompactLogix 5370 L3 Controllers
Local Expansion Modules
CompactLogix 5370 L3 control systems support the use of Compact I/O
modules as local expansion modules along a CompactBus backplane.
Consider the following when using local expansion modules:
• The controllers support this many local Compact I/O modules across
up to three I/O banks, that is, the local bank and two more banks.
• When possible, use specialty Compact I/O modules to meet unique
application requirements.
• Consider using a 1492 wiring system for each I/O module as an
alternative to the terminal block that comes with the module.
• Use 1492 PanelConnect™ modules and cables if you are connecting
input modules to sensors.
Install Local Expansion Modules
Complete these steps to install local expansion modules in your
CompactLogix 5370 L3 control system:
1. Attach the 1769 Compact communication or I/O modules as described
in these publications:
• Compact I/O Modules Installation Instructions, publication
1769-IN088
• Compact I/O DeviceNet Scanner Module Installation Instructions,
publication 1769-IN060
Cat. No. Local Expansion Modules
Supported, max
1769- L30ER
1769-L30ERM
1769-L30ER-NSE
8
1769-L33ER
1769-L33ERM
16
1769-L33ERMO —
1769-L36ERM 30
1769-L36ERMO —
1769-L37ERM, 1769-L37ERMK 31
1769-L37ERMO
(1)
(1) Available at software version 31 and firmware revision 31.
—
1769-L38ERM, 1769-L38ERMK 31
1769-L38ERMO
(1)
—
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