Rockwell Automation T8424 Trusted TMR 120Vac Digital Input Module - Manual (Page 23)

Trusted TM Module T8424
Issue 8 Sep 11 PD-T8424 23
4.3. I/O Status LEDs
There are 40 input channel status LEDs on the module front panel, one for each field input. These
indicators are controlled by the FPU. The FPU receives data from each of the module slices. The FPU
performs a 2-oo-3 vote on each data bit from the slices and sets the indicators accordingly.
Indicator state Description
Off Open field switch, OFF state.
Green Closed field switch, ON state.
Red – flashing Open FTA Cable.
Table 15 Default I/O Status Indicators
Note: The LEDs indicating channel status may be configured to suit user requirements by
implementing the procedure for configuring the System.INI file detailed in PD-T8082B.