switching command with select and "watchdog timer" = "œnone" counts in background.

Summary

The action "switching command" (former "double command") on variable with "Select before Operate" and in group with property "watchdog timer" = "none" counts in background after execute 2nd stage. Then when the device (IED) delays command termination can cause blocking situation in zenon command processing. Issue reproducible only in case of SBO use since implementation of "auto-remote" action type.

Note: the action "auto-remote command" has to keep supervising SBO process until command execution termination, but not other action types.

Description

Note: the action "auto-remote command" has to keep supervising SBO process until command execution termination, but not other action types.

Solution

Now if the execute fails & negative respond from IED or action timeout - an error message is logged with failure reason and handling object ends.

Information

Issue Number: 33120
Fixed on Date: 13.11.2014
Versions: 7.20 0 BUILD 17768

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switching command with select and "watchdog timer" = "œnone" counts in background.

switching command with select and "watchdog timer" = "œnone" counts in background.

Summary

Description

Solution

Information

Related Articles

Command Processing action switch-/pulse-command when Direction="none" by activated 'Watchdog timer' always waits action Timeout and then sets TIMEOUT status bit.

In Watchdog timer 'none' and SBO the command action resets PROGRESS bit first when COT_actterm (10) comes or action timeout is elapsed.

When PLC is not responding the Select command the action is not breaking by ‘Timeout for SBO activation’ and keeps waiting on Select response.

access violation caused by Command input in the set-point action when 'Cancel' of SBO

While a command action waits on Select response from PLC another actions - for other RV - can be executed only once - then NET_SEL stays and locks.