Rockwell-automation T8424 Trusted TMR 120Vac Digital Input Module Manual de usuario descargar pdf (Pagina 17)

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Module T8424

Issue 8 Sep 11 PD-T8424 17

3.2.5. Rack 5: LINE_FLT

Channel Description

1 Field input channel 1 line fault

2 Field input channel 2 line fault

40 Field input channel 40 line fault

Table 8 Rack 5: Line Fault descriptions

The line fault input is reported as true (logic ‘1’) for a line fault condition (for this module, only FTA to

module Open Circuit). The logic state is the majority voted value.

When the TMR Processor detects a 2oo3 channel fault or discrepancy, or if the input module is

simulated, the line fault input is set to True.

3.2.6. Rack 6: DISCREP

Channel Description

1 Discrepancy status inputs 1 to 16 (input 1 is LSB, bit 0)

2 Discrepancy status inputs 17 to 32 (input 17 is LSB, bit 0)

3 Discrepancy status inputs 33 to 40 (input 33 is LSB, bit 0)

Table 9 Rack 6: DISCREP bit descriptions

Each of the integers reports the discrepancy status of 16 input channels. The corresponding bit within

the integer is set to ‘1’ when a discrepancy condition is detected on that input channel’s input state

(rack 2). For example, if slice B of the input module reports the state of channel 4 as state 5, while

slices A and C report channel 4 as state 2, then Slice B has a channel discrepancy for channel 4. In

this case, bit 3 of channel 1 on the Discrepancy board would be set to ‘1’.

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Rockwell-automation T8424 Trusted TMR 120Vac Digital Input Module Manual de usuario Pagina 17