Rockwell Automation T7408 ICS Regent+Plus DC Digital Input Modules 24VDC, 48VDC and 120VDC - Manual (Page 4)

DC Digital Input Modules (T7401, 02, and 08)
4
I n d u s t r i a l C o n t r o l S e r v i c e s
Figure 2. DC Digital Input Module.
Active and Fault Status Indicators
These green and red LEDs indicate the overall health of the
module. During normal operation the green ACTIVE
indicator flashes at the controller's scan rate. If a module
fault is detected the red FAULT indicator turns on and the
green indicator turns off.