Rockwell-automation 1769-OF4VI Compact I/O Isolated Analog Modules User Manual download pdf (Page 115)

Publication 1769-UM014B-EN-P - May 2010

Configure Modules in a Remote DeviceNet System with a 1769-ADN DeviceNet Adapter D-11

1769-OF4CI Output Channels Example

Each of the two analog output channels are disabled by default. To enabled a

channel, click its Enable box so that a check mark appears in it. Then, choose

your Output Range, Data Format, and the state or your outputs should the

controlling controller be placed into the program mode, fault, or lose

communications.

Program State and Fault State each have two options:

 Hold Last State

Hold last state will hold the analog output at the last value received

before the controller was placed in program mode or before it faulted.

 User-defined State

When selecting user-defined state, you must specify a value for the

analog output to revert to should the controller be placed in program

mode or fault. The values used for user-defined state must be valid

values determined by the selected Data Format and Output Range. If

communications fail, you may also choose whether your Program State

or Fault State options take place for each channel.

In this example, channels 0 and 1 are enabled and configured for 4 to 20 mA

Output Ranges. The Data Format for channel 0 is Scaled-for-PID, because it is

the CV (output) value from your PID instruction. Hold last state was chosen

for all possible conditions other than Run mode for channel 0.

Channel 1 is also enabled and configured for 4 to 20 mA Output Range.

Raw/Proportional Data Format was chosen for maximum resolution. In

addition, a requirement of the system is that this analog output must always be

at 4 mA if the system is not in control of it.

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Rockwell-automation 1769-OF4VI Compact I/O Isolated Analog Modules User Manual Page 115