Hi All, Currently we are using both CPU in one of our projects, however, our client are now expanding and we need to clarify with them in order to add another CPU for this expansion instead of adding remote IO. Any supported documents on this?
Hi Muhammad,
Welcome to the Community!
If you want to add another PLC to the machine, you’ll have to add an additional configuration to your Automation Studio project, and I’m assuming some sort of communication between the two CPUs. One way to handle this communication is with Powerlink. See this post for additional information.
Hi Marcus,
Thanks for your reply. Actually our point of view is to show to customer that this existing PLC is fully used and need to add future point to another PLC instead off expand it to the remote IO. Hence, we need to justify this with some information on the limitations of the CPU. Any idea?
Thanks
Hi Muhammad,
it is not simple to define when a CPU is ‘full’.
There are various limits: memory, computing time, exchange within IO cycle time, Powerlink etc and there are also many options in Automation Runtime to mitigate these limits.
In general, it is a good start to perform a profiler recording during ‘typical’ use of the machine and then observe the fastest task class and the remaining time to see if there is any ‘reserve’.
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