Rockwell Automation T8431 Trusted TMR 24Vdc Analogue Input Module - 40 Channel - Manual (Page 17)

Trusted
TM
Module T8431
Issue 16 Sep 11 PD-T8431 17
3.2.2. Rack 2: STATE
This board provides the majority voted numerical input state. This indicates within which threshold
band the field input is in and module channel fault status.
Channel Description
1 Field input channel 1 state
2 Field input channel 2 state
40 Field input channel 40 state
Table 6 Rack 2: STATE descriptions
The numerical input state is returned as an integer value.
Value Description
8-15 Internal channel fault on module
7 Unknown
6 Over-range
5 High-High
4 High
3 Normal
2 Low
1 line fault
0 Underrange
Table 7 Rack 2: STATE bit descriptions
The input channel has a value 7 (Unknown) when:
1. The input channel cannot be correctly measured by two or more slices of the TMR input
module.
2. The TMR Processor detects a 2-oo-3 channel discrepancy between the three slices of the
TMR input module.
3. The module is simulated (not installed or the TMR Processor cannot communicate with 2-oo-
3 slices of the module).