Rockwell-automation 1769-OF4CI CompactLogix 1769-OF4CI Module Manual de usuario descargar pdf (Pagina 18)

18 Compact 1769-OF4CI Isolated Analog Output Module

Rockwell Automation Publication 1769-IN075B-EN-P - August 2010

Input Data File

For each module, slot x, input data file words 2…5 contain the state of the

module’s output data (output data echo) file words 0…3. During normal

operation, these input words represent the analog values that the outputs are

directed to by the control program.

• S = General status (over-range, under-range, or low/high clamp

exceeded).

• H = Output held bit.

• U = Under-range (or low-clamp exceeded) alarm.

• O = Over-range (or high-clamp exceeded) alarm.

Word

Bit Position

1514131211109876543210

0 S3S2S1S0

1 H3U3O3 H2U2O2 H1U1O1 H0U0O0

2 Channel 0 Data Value

3 Channel 1 Data Value

4 Channel 2 Data Value

5 Channel 3 Data Value

IMPORTANT

The output module’s input data file reflects the analog output

data echo of the module, not necessarily the electrical state of

the output terminals. It does not reflect shorted or open outputs.

1 2 ... 13 14 15 16 17 18 19 20 21 22 23 ... 27 28

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Rockwell-automation 1769-OF4CI CompactLogix 1769-OF4CI Module Manual de usuario Pagina 18