Rockwell-automation 1769-OB8 Compact Solid State 24V dc Source, High C Manuel d'utilisateur télécharger pdf (Page 12)

12 Compact™ Solid State 24V dc Source, High Current Output Module

Publication 1769-IN063A-EN-P - March 2003

I/O Memory Mapping

Output Data File

For each module, slot x, word 0 in the output data file contains the control

program’s directed state of the discrete output points.

w = write

Output Module’s Input Data File

For each module, slot x, input data file word 0 contains the state of the module’s

output data (output data echo) file word 0. During normal operation, these input

bits represent the logic state that the outputs are directed to by the control program.

They are also dependent upon the:

· Program Mode configuration (if supported by the controller)

· The Fault Mode configuration (if supported by the controller)

r = read

Word

Bit Position

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

0 0 0 0 0 0 0 0 0 w w w w w w w w

Word

Bit Position

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

0 0 0 0 0 0 0 0 0 r r r r r r r r

IMPORTANT

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

of the module, not necessarily the electrical state of the output

terminals. It does not reflect shorted or open outputs.

It is important to use this input word if the controller adapter

supports the Program Mode or Fault Mode function, and if it is

configured to use them.

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Rockwell-automation 1769-OB8 Compact Solid State 24V dc Source, High C Manuel d'utilisateur Page 12