Siemens latency
Siemens latency
(OP)
I am stuck trying to determine the latency of the I/O over a small network when incorporated into a program. I can determine the program cycle time, but do not know how to figure in the network polling rate as far as network input monitoring within the program.
I am using the new 0BA7 PLC with the ethernet capability, and Siemens is little or no help at all, as their tech support is as new to this thing as I am.





RE: Siemens latency
If your processors did nothing else you'd have the internet latency and the processor loop time combined, and you know the loop time. With lots of samples the PLC response time should average half the loop time for each PLC so the overall delay minus the loop time for one processor should be the network delay.
RE: Siemens latency
TTFN
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