Background: L72/EN2TR No continuous task 20% system overhead time-slice, reserved for system tasks Max concurrent requests = 2 CIP connection size = 500 Tags are a mixture of UDTs and AOI datatypes (legacy code that hasn’t been rewriten) I’ve got an L72/EN2TR that’s maxing out on CPU usage due to…

If you can’t refactor the program’s tag structure or increase the overhead timeslice I don’t think there’s anything you can do but request less tags at a slower rate from Ignition. Not using AOIs and ensuring UDTs read by the HMI contain just tags actually needed by the HMI so you aren’t reading th…

Don’t use a 100ms poll rate. That is the vast majority of your load. Probably shouldn’t use a 250ms poll rate, either. (That kind of thing is why my EtherNet/IP module exists. Rockwell’s I/O comms is way less CPU load. You can also get around the AOI problem by CPS’ing those tags into the I/O bu…

If there’s no magic bullet here with lowering the scan class rates then we’ll probably just end up refactoring the tag structure. I’ve seen this issue before but only at much higher tag counts. Since there’s quite a lot of instances of these “legacy” AOIs (but relatively few types), I’m mulling ove…

Super frustrating that this still exists... we also are experiencing this on multiple projects for clients... I don't understand how RSLinx/FTLinx can effectively read tags embedded within AOIs/UDTs without causing the CPU to run up to 100% while the IA Logix driver cannot... Our CPU load is minima…

[image] paul.bouillon: Please, please just make this go away... Soon, very soon: [image] Cannot read some tags inside Rockwell AOI Ignition Early Access I intend to fix this, BTW. Stay tuned...

[image] paul.bouillon: I don't understand how RSLinx/FTLinx can effectively read tags embedded within AOIs/UDTs without causing the CPU to run up to 100% while the IA Logix driver cannot... We've discussed this elsewhere, but it's very simple. Rockwell explicitly states that the rules for i…

I really cannot wait lol... plant is running... brains are being boiled... questions as to "why we didn't just go with FTView" Thanks @pturmel :slight_smile: for taking this on as a third party (?) At current status... I don't think it's fair to propose/suppose that the IA OPC Logix driver works e…

High ControlLogix Comms Usage

General Discussion

pturmel October 19, 2022, 12:26am 6

Soon, very soon: