g.mccormick
Lifetime Supporting Member
PLC is a 1769-L30ER
PID instruction.
Setpoint = 26687
PV = 13537
Control Action = SP-PV.
Error should = 26687 - 13537 = 13150
Error listed as -836.45???
I can't figure out what is happening here. The PID seems to be calculating a bogus error. This is then driving the PID to not increase the command.... Any help?
PID instruction.
Setpoint = 26687
PV = 13537
Control Action = SP-PV.
Error should = 26687 - 13537 = 13150
Error listed as -836.45???
I can't figure out what is happening here. The PID seems to be calculating a bogus error. This is then driving the PID to not increase the command.... Any help?