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FX Series Programmable Controllers Points Of Technique 10
10-28
10.18 Example Autotuning Program
The followin
g
pro
g
rammin
g
code is an example of how to set up the Pre-Tunin
g
function.
•
K500 D500
FNC 12
MOV
P
K1800 D502
FNC 12
MOV
P
K3000 D510
FNC 12
MOV
P
H0030 D511
FNC 12
MOV
P
K 0 D515
FNC 12
MOV
P
K 0 D533
FNC 12
MOV
P
K2000 D532
FNC 12
MOV
P
SET M1
M0
FNC 79
TO
K 0 K 0 H3303 K 1
FNC 78
FROM
K 0 K 10 D501 K 1
M8002
M8000
K 70 D512
FNC 12
MOV
P
RST D502
X010
M1
FNC 88
PID
D500 D501 D510 D502
M1
X010
M0
PLS
D500: SV = 500
D502: MV = 1800, initial value
D510: T
S
, S
3
+0 = 3000
D511: S
3
+1, Bits 0-3 and 5-15 Off, Bits 4 and
5 On. Bit 4 = Pre-Tune Function
Bit 5 = MV Range Limit
D512: Input Filter, S
3
+2 = 70%
D515: K
D
, S
3
+5 = 1800, initial
value
D532: MV Max, S
3
+22 = 2000
D533: MV Min, S
3
+23 = 0
Pulse M1 to turn On PID command
Send setting to Special Function Block
Read data from Special Function Block
Reset Output data when PID command is Off
PID Instruction Command Line
X011
RST M1
Turn Off PID Instruction