Hello, I was poking around the different status pages on the gateway and noticed the load factor for all my devices is anywhere from 105% - 275% for “Scheduled at 1000ms”. There are close to 40,000 tags in my project and a majority of them run at a second scan class but I don’t see any performance…

Are your tags in AOIs or UDTs? If in AOI’s you are going to have a bad time.

That dropped my Load Factor to 55-60%. But my MSG Class 3 is still around 88-90%. I wonder why that is?

[image] cegge: Is there anyway to allow more time for comms or to adjust this in any way to get more out of the PLC gigabit port? The gigabit port is not the bottleneck. A 100mbit port would not be a bottleneck. The bottleneck is the PLC. Bumping concurrency and the CIP connection size can …

Yes, They are AOI’s. specifically the AB default P_Motor/P_VSD/. I made UDT’s in Ignition and only brought in the tags I needed the operators to use/see. I basically re-made the P-Motor faceplate in Ignition. It was a pain. We are migrating from standalone Panelviews running FactoryTalk ME. Why are …

[image] cegge: Why are AOI’s worse for the Load Factor? AOIs can't be read efficiently because even if you have made every normal tag inside it externally accessible there are still EnableIn and EnableOut tags locked to "hidden". So the driver has to read all tags belonging to an AOI individu…

More discussion of this phenomenon over here: [image] Cannot read some tags inside Rockwell AOI Ignition Early Access What Mike said, but also: Don’t. All AOI’s have EnableIn and EnableOut booleans that are locked to “Hidden” and therefore prevent most optimization of …

Thanks Phil I was looking for that post and quoting it from memory.

When you say bumping concurrency, what is that? I am going to assume class 3 comms are also sent to PanelViews? We have lots of those… Which I am also assuming that this class 3 comms is all of my class 3 comms including those going to other ENBT cards etc…from this PLC??

I searched for AOI plus myself… (:

[image] cegge: When you say bumping concurrency, what is that? It's another setting on the driver along with the CIP connection size. It controls the number of CIP connections the driver makes and thus the number of concurrent requests the driver will issue to the PLC. [image] cegge: I a…

Device Load Factor

Ignition

pturmel March 12, 2021, 6:35pm 23

More discussion of this phenomenon over here: