Rockwell-automation AADvance Controller Configuration Guide Manuel d'utilisateur télécharger pdf (Page 151)

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Document: 553633

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USINT

Channel state

Reports a state value for the channel:

1 = no vfield ( < 18Vdc)

2 = off (demand < 0.4mA)

3 = no load/open circuit

4 = on (demand > 0.4mA)

5 = compliance fault (demand cannot be met)

6 = reverse polarity (< -1Vdc)

7 = faulted

Faulted State for Analogue Outputs

An analogue output channel is faulted (the state reports a value of 7) when normal

operation or diagnostics tests have identified a specific fault condition. A single

identified fault condition thus results in a state value of 7.

When the state reports the value 7 then the following 'safe' values are reported by the

other variables:

 Line Fault = TRUE

 Discrepancy = TRUE

 Channel Fault = TRUE

 Voltage = 0mV

 Raw Count = 0mA

Configure Advanced Channel Settings for Analogue Output Channels

The AADvance Workbench provides advanced settings for individual analogue output

channels:

 Specify a shutdown state for an output; this defines how the output will behave

when its parent 9481 or 9482 analogue output module is in a shutdown mode. The

options are Off, Hold Last State and Custom.

 Specify a value for the current output in the shutdown mode, using the same

scaling as the Command Value.

 Specify a threshold for reporting of Discrepancy in parameter Fail-Safe Guard

Band. This is a percentage of 0-20mA demand.

To configure the advanced channel settings do the following:

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Rockwell-automation AADvance Controller Configuration Guide Manuel d'utilisateur Page 151