Mitsubishi Electronics MELSEC-F Manuel D’Utilisation
FX
3G
/FX
3U
/FX
3UC
PLC User's Manual - Analog Control Edition
PID Instruction (FNC 88)
M-17
3 Parameter
3.2 Details of Parameters
K
FX
3U
-4A
D
D
-P
NK
-A
D
P
L
FX
3U
-4AD
-TC
-
A
D
P
M
PI
D
In
st
ru
ctio
n
(F
N
C
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
S
3
S
3
S
3
Time
Variation
Output (MV)
Sampling time (TS)
ON
ON
Alarm flag
+24
bit2
S
3
+24
bit3
S
3
Variation
S
3