Questions about the CS3000 program
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Suppose there is a liquid level LI11005; I want to take a PV signal every two hours and then output the difference by subtracting the value from two hours ago from the current value. It keeps cycling, and can be updated every two hours. I don’t know how to run this program; I’m asking experts for help
One TM; one CALCU TM is timed for 2 hours, and when the time is up, CALCU is activated to compute the difference
For the TM block, set PH to 7200, and then use CALCU to compute FLOAT TMP； IF TM.BSTS = “CTUP” THEN !When the timing is up, set TM.OP to “START”. After the timer is restarted, BSTS becomes NR. CPV = LI11105.PV – TMP; TMP = LI11105.PV END IF This can be executed using a sequence control table at the time of startup, to initiate the timer
Thank you, I’ll give it a try first and ask if I have any questions