Rockwell Automation Publication 1769-UM021I-EN-P - May 2018 221
Use I/O Modules with CompactLogix 5370 L2 Controllers Chapter 8
For example, the 1769-ASCII Compact ASCII and 1769-HSC Compact
high-speed counter modules each have a power supply distance rating of four.
The farthest local expansion module slot where you can install one of these
modules in a CompactLogix 5370 L2 control system is module slot number
two or three. The slot number is determined by the controller catalog number
that is used in the control system.
Tab le 26
describes the farthest local expansion module slot where you can
install a 1769-HSC high-speed counter module and meet its power supply
distance rating requirement.
Table 26 - Example CompactLogix 5370 L2 Control Systems with a 1769-HSC High-speed Counter Module
Controller Cat. No. Number of Embedded
I/O Modules
1769-HSC High-speed Counter Module Power Supply Distance Rating Calculation Impact
1769-L24ER-QB1B 1 The embedded I/O module is the first module in the module count. At its maximum power supply distance rating, the
1769-HSC high-speed counter module can be installed in slot 3 of the local expansion modules, as shown in the following
graphic.
Three modules between the power supply and the 1769-HSC high-speed counter module.
With this controller catalog number, you can only install up to two local expansion modules
between the controller and the 1769-HSC high-speed counter module.
1769-HSC Module
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