Jump to content
OMRON Forums

Real Time Interrupt - [Bsy/Err]


Recommended Posts

  • 2 weeks later...
  • Replies 1
  • Created
  • Last Reply

Top Posters In This Topic

Top Posters In This Topic

Posted Images

This is the result of one of the RTI tasks taking longer than a single RTI period (indicated by Sys.RtIntBusyCtr > 0). Typically Foreground PLC and CPLC execution would be the cause.


Sys.RtIntBusyCtr contains the number of times since power-on/reset the real-time-interrupt tasks have not completed before the next real-time interrupt occurs. A situation where this condition occurs is not necessarily a serious problem, but may indicate possible overloading of the processor at this priority level (foreground Script and C PLCs will “skip a beat” when this re-entry occurs).


Try increasing Sys.RtIntPeriod.

Link to comment
Share on other sites

This topic is now closed to further replies.

  • Create New...