Mitsubishi FX3U-4AD User Manual page 457

FX /FX /FX PLC User's Manual - Analog Control Edition
3G 3U 3UC
PID Instruction (FNC 88)
Auto-tuning ON flag
M1
Auto-tuning ON flag
M14
Auto-tuning is finished
PID operation is executed.
M3
Heater operation cycle
T246
PID operation
is executed.
M3
T246 < D502
FNC226
LD <
Error flag
M8067
FNC 12
MOV
M2
PID operation is executed.
M3
T246 D502
5 Example of Practical Programs (for Step Response Method)
5.2 Program example of auto-tuning (step response method) and PID control
Auto-tuning operation is
D511 K2M10
confirmed.
Auto-tuning is finished.
PLF M2
RST M1 The normal operation is started.
Heater operation cycle
T246
K2000
Preset
[ RST T246 ]
Heater output
Y021
Error occurs.
Y020
END
K
L
L-25