Studio5000 Task Monitor

[JacoRoselt 0]

Good day,

Hope someone can assist. 

We are busy trying to diagnose high CPU utililization on a Controllogix system (1756-L75). We are using the Studio5000 Task Monitor. We have optimized our program as far as possible, but we noticed on the task monitor that the "Comms IO Monitor" is using 60% of the CPU. 

Can anyone explain what the tasks mean:

Comms IO Monitor

Comms

System

 

 

[pturmel 160]

That usually means that, in addition to the logic in the PLC, you are also performing substantial, high-rate I/O scanning.  Super fast RPI settings are not "free".