Mitsubishi Electric FX3G User Manual page 523

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