User guide

DC Digital Input Modules (T7401, 02, and 08)
4 Industrial Contr ol Services
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.