Chapter 15 PID Function (Built-in function)
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2) Program explanation
a) Since F0099 (always on) is ON if PLC is converted form STOP to RUN, CH0 of A/D and
D/A starts operating.
b) Once M0000 junction is on, the auto-tuning of loop 0 starts. At the moment, PV entered to
CH0 is moved to K1875, the PV input device of loop 0 and saved accordingly.
c) The auto-tuning MV of Loop 0 output by PIDAT command is output to D/A output module
by line 11, MOV command.
d) Once auto-tuning is complete, it moves P, I, D coefficients generated from auto-tuning to
the input devices of P, I and D, K1218,K1220 and K1222, sets M001 and starts the
operation of PID loop 0.
3) In case of IEC type, program example is as shown below.
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