Rockwell Automation T8433 Trusted TMR Isolated 4-20 mA Analogue Input Module - 20 Channel - Manual (Page 21)

Trusted
TM
Module T8433
Issue 11 Apr 10 PD-T8433 21
3.2.4. Rack 4: THRSHOUT
This board allows the current thresholds for an analogue input channel to be read or written by the
application. The application can write new thresholds in the THRSHOUT board for a particular channel,
and it can read the current thresholds from the THRSHIN board, under control of a channel in the
THRSHOUT board.
Channel Description
1 Write the threshold data for a particular
input channel on channels 3 to 11 to the
module. The data is written on a rising
edge 0 to 1.
2 Read the threshold data for a particular
channel from the module to the THRSHIN
board. The data is read on a rising edge 0
to 1.
3 Channel number to write/read threshold
data. Range 1 to 20.
4 States 2 > 1 falling threshold
5 States 1 > 2 rising threshold
6 States 3 > 2 falling threshold
7 States 2 > 3 rising threshold
8 States 4 > 3 falling threshold
9 States 3 > 4 rising threshold
10 States 5 > 4 falling threshold
11 States 4 > 5 rising threshold
Table 10 Rack 4: THRSOUT descriptions
3.2.5. Rack 5: LINE_FLT
Channel Description
1 Field input channel 1 line fault
2 Field input channel 2 line fault
20 Field input channel 20 line fault
21 Field input channel 1 redundant line fault
40 Field input channel 20 redundant line fault
Table 11 Rack 5; LINE_FLT
The line fault input state is reported as true (logic ‘1’) for a line fault condition (open circuit,
indeterminate, or short circuit condition). The logic state is the majority voted value.