Mitsubishi MELSEC-F FX3U Series

FX 3U /FX 3UC Series PLC User's Manual - Analog Control Edition
PID Instruction (FNC 88)
G-17
3 Parameter
3.2 Details of Parameters
A
Common Items
B
FX
3UC
-4AD
C
FX
3U
-4AD-ADP
D
FX
3U
-4DA-ADP
E
FX
3U
-4AD-PT
-ADP
F
FX
3U
-4AD-TC
-ADP
G
PID Instruction (FNC 88)
3.2.8 Alarm output flag: (S3)+24
When the input variation [ +1, bit 1] is set to 1
When the output variation [ +1, bit 2] is set to 1
- When the preset input/output variation is exceeded:
Each bit of +24 (alarm flags) turns ON immediately after PID instruction execution.
S 3
Time
Variation
Measured value (PV)
Sampling time (TS)
ON
ON
Alarm flag
+24
bit0
S
3
+24
bit1
S3
S 3 S 3
Time
Variation
Output (MV)
Sampling time (TS)
ON
ON
Alarm flag
+24
bit2
S
3
+24
bit3
S3
Variation
S 3