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High−level Instructions
5
F356
(EZPID)
Outline
Temperature control (PID) can be easily performed using the image of a
temperature controller.
Program example
Trigger
R1
10
F356 EZPID, WR1, WX2, DT32710, DT100
S1
S2
S3
S4
Operands
Relay
Operand
Operand
WX WY WR WL
S1
N/A
A
S2
A
A
S3
N/A
A
S4
N/A
A
(*1) I0 to ID.
Operation
PID processing is performed to hold the measured value (PV) at the set value (SP).
Writing OUT instruction immediately after this instruction enables the PWM output (on−off output) similar to a
temperature controller.
Auto−tuning function is also available to calculate the control parameter of PID automatically.
It can be used with analog output as it outputs values as well as PWM output.
3 − 768
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: info@clrwtr.com
Easy PID
Ladder Diagram
Ladder Diagram
S1
S2
Control data
Measured value (PV)
Starting No. of area storing PID control parameter
Starting No. of PID processing work area
Timer/Counter
SV
EV
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
Y0
S3
S4
Index
Register
register
SWR
SWR
In
DT
LD
(*1)
A
A
A
A
A
A
A
A
N/A
A
A
N/A
Availability
FP−X: Ver 1.20 or more
FPΣ: 32k/FP0R
Boolean
Address
Instruction
10
ST
R
11
F356(EZPID)
WR1
WX2
DT32710
DT100
21
OT
Y
Constant
SDT
SDT
modifier
K
H
N/A
N/A
N/A N/A
A
A
N/A N/A
N/A
N/A
N/A N/A
N/A
N/A
N/A N/A
A:
Available
N/A: Not Available
1
0
Index
Index
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−
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