Chapter 15 PID Function (Built-in function)
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[Figure 15.14 Conversion of RUN direction in the mixed forward/reverse control]
(c) At the moment, every control parameter uses the parameter of a loop set for forward operation
while MV is output to MV output area of a loop of forward operation. Reversely, every control
parameter uses the parameter of a loop set for reverse operation during reverse operation run
while MV is also output to MV output area of reverse operation loop.
(d) WRT
WRT is a command to save K area flags changed during operation to the internal flash memory
of PLC.
- Once start juction is on, it writes K area values to flash memory.
- Each operand description is summarized as follows.
Designating basic uit as 0
4 : PID auto-tuning parameter