Mitsubishi FX1S Series Programming Manual page 251

FX Series Programmable Controlers
Example PID Settings
The partial program shown at below demonstrates which parameters must be set for the
functioning of the FX2N. The first step sets the user values for S
instruction will be activated when M4 is On.
From the PID instruction at the bottom of the ladder, S
or MV = D525.
D500: Ts = 500 ms
D501: Forward Operation,
Alarms Not Enabled
D502: Input Filter = 50%
D503: K
D504: T
D505: K
D506: T
D200: Set Point = 1000
D201: PV
input value)
Begin the PID instruction
D525: PID Output Value
= 75%
P
= 4000 ms
I
= 50%
D
= 1000 ms
D
(an analog
nf
= D200; S
1
M8002
M8002
M1
FNC 79
K2
TO
FNC 78
K2
FROM
M4
FNC 88
D200
PID
Applied Instructions 5
+0 to S +6. The PID
3 3
= D201; S = D500; and D
2 3
FNC 12
K500 D500
P
MOV
FNC 12
H0000 D501
P
MOV
FNC 12
K50 D502
MOV P
FNC 12
K75 D503
P
MOV
FNC 12
K2000 D504
P
MOV
FNC 12
K50 D505
P
MOV
FNC 12
K3000 D506
P
MOV
FNC 12
K 1000 D200
P
MOV
K1 K4 K4
K5 D201 K4
D201 D500 D525
5-131