User guide

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Module T8449

Issue 13 Apr 10 PD-T8449 25

For control outputs, the State indicates the operation state of the output circuit as follows:

Value Description

7 Channel Fault

6 Field fault (e.g. field leakage to 0V or 24V)

5 Short circuit in field wiring or load

4 Output energised (ON)

3 Open circuit in field wiring or load

2 Output de-energised (OFF)

1 No field supply voltage

0 Unused

Table 7 Rack 2: STATE Output descriptions

For feedback inputs, the State indicates the threshold voltage level of the input circuit as follows:

Value Description

7 Channel Fault

6 Line fault, at or above maximum detectable

voltage

5 User defined voltage range

4 User defined voltage range

3 User defined voltage range

2 User defined voltage range

1 User defined voltage range

0 Line fault, at or below minimum detectable

voltage

Table 8 Rack 2: STATE Input descriptions