ProSoft Technology BM-xx00-RM1K - Manual (Page 22)

Installation
Page 22 of 48 ProSoft Technology, Inc.
April 21, 2015
c. Use the 16-position switch located on the front of each I/O Module to set
device ID(s). Each pair of Modules must have a unique ID.
5. Attach the other End Terminal Bracket to secure the Modules (place it next to
the last module without leaving a gap).