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How can I eliminate Bad Integrity for something that will be powered down for several months

A have a DeviceNet system on an S-series controller with a dozen Allen Bradley PowerFlex 753 drives connected to it.   One drive has to be locked out for several months during the winter.   When power to the drive is shutdown I of course get bad integrity for that device.  I thought my solution to this would be to disable polling the device (uncheck the Enable I/O Polling box in the device Properties) and then download the "signals and properties to the device.

Unfortunately that did not work as I am still getting bad integrity for the device.  Does anybody have any suggestion on how to deal with this situation.  Thanks.

Dave

foxriver

• 13 Sep 2018 2:04 PM
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• Andre Dicaire

  

  • 13 Sep 2018 2:41 PM

  Unfortunately, diagnostic integrity is a status, and as such, is what it is. The result is the OINTEG is BAD and if we want to use this to proactively indicate conditions relating to the hardware, we cannot mask these bits.
  
  The Hardware Alerts for each device are intended to provide notification of hardware health. Each of these integrity status bits maps into the Hardware alerts for the controller. The Condition Summary provides a list of all active conditions for each Hardware Alert, and this is where you can Suppress the status, thus clearing the Hardware alert. If a new/different status is set, the Hardware alert will be trigged again. The Controller Module faceplate and the Alarm Banner hardware alert field will show the presence of an active hardware alert, but suppressed conditions will not set the alert.
  
  So if you use the Alarms[1] parameter for the controller to indicate overall integrity, rather than the OINTEG status, you can manage the reported health of the Controller and suppress the underlying condition using the Condition Summary.
  
  I tried this on my reference system and cleared IO channel related Status conditions and this cleared the Alert from the Hardware Alarm List. The condition summary can be launched from Diagnostics, The Hardware Alarm Summary or from the Node Faceplate. There you can view all active and suppressed conditions sorted by hardware alert.

  Andre Dicaire

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