freeroma21 Posted August 7, 2019 Share Posted August 7, 2019 That message is occurring intermittently. What can be wrong? I want to know why it's happening. It's happening repeatedly in 1 to 5 seconds. Link to comment Share on other sites More sharing options...
steve.milici Posted August 16, 2019 Share Posted August 16, 2019 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 More sharing options...
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