I’ve been playing with Ignition using multiple PLCs, and I’m having problems ONLY with one specific model - M580 from Schneider.
What happens with it, is that writing is quite slow. If I invoke a system.tag.writeBlocking I’ll have to wait quite a bit, and we had planned some operations where making sure the values are written is very important, as is response time.
Now, I have experienced this problem with other tools, like our current (and old) SCADA system, but there it can be mitigated by increasing the maximum sockets used by the modbus driver, and that has a big impact on write performance with minimum impact on the network traffic.
I did see on Ignition 8 Manual that there should be an option for “Concurrent Request” that might eventually do the same thing, but that option does not come up for me in either 8.0.14 and 8.0.12.
Anyone experienced something similar? Is there any way to improve this kind of performance?