40 Rockwell Automation Publication ICSTT-RM406J-EN-P - February 2021
Chapter 4 About Troubleshooting
a pair goes into shutdown mode with some channels energized (from a hold
last state setting). This makes sure that these channels do not get stuck
energized, and that the remaining module can energize or de-energize these
channels according to the commanded state received from a running
application.