Setting the End-of-Line (EOL) switch - Metasys - M4-XPM04060 - M4-XPM09090 - M4-XPM18000 - Field Device - M4-XPM Expansion Module - 13.0

M4-XPM Expansion Modules Installation Guide

Brand
Metasys
Product name
M4-XPM Expansion Module
Document type
Installation Guide
Part number
24-10143-02147
Document revision
C
Version
13.0
Revision date
2023-10-02
Product status
Active
Language
English

About this task

Each XPM expansion module has an EOL switch, which, when set to ON (up), sets the expansion module as a terminating device on the bus. See figure labeled XPM with cover removed showing EOL switch and jumper positions for the EOL switch location. The default EOL switch position is OFF (down).

Figure 1. End-of-Line switch positions

To set the EOL switch on an expansion module, complete the following steps:

Procedure

  1. Determine the physical location of the expansion module on the SA or FC bus.
  2. Determine if the expansion module must be set as a terminating device on the bus.
    Note: SA and FC buses have different EOL termination rules. For detailed information about EOL termination rules and EOL switch settings, refer to the MS/TP Communications Bus Technical Bulletin (LIT-12011034) .
  3. If the expansion module is a terminating device on the FC bus, set the EOL switch to ON. If the expansion module is not a terminating device on the bus, set the EOL switch to Off.

    When an expansion module is connected to power with its EOL switch set to ON, the amber EOL LED on the controller cover is illuminated.