Example) Switch to proportional plus derivative control mode and carry out PWM
output.
R1
EZPID WR1
R1
WX10 DT100
DT0
Y180
MV.US
U2
DT5
[S4+5] DT5
Control mode
EZPID instruction
execution
■
Sample program (analog output)
Example) In analog output, change the output upper limit [S4+2] to K4000, and the
control interval [S4+4] to K1000 (10 seconds).
R0
EZPID WR1
R1
WX10 DT100
DT0
MV.SS K4000
DT2
R10
SET
R1
MV.US U1000
DT4
MV.SS
DT0
WY18
R1
(
(
)
)
DF
(
(
)
)
DF
R2
R13
SET
(
(
)
)
DF
[S1] WR1 bit3
Select an analog
output
[S1] WR1 bit0
Request auto-tuning
[S4+2] DT2
Output upper limit
[S4+4] DT4
Control interval: 10
seconds
[S4] DT0
WY18
Output value (MV)
Analog output unit
EZPID instruction
execution
● In order to use analog output, set 1 to bit 3 of the operand [S1].
● The output lower limit [S4+1] and the output upper limit [S4+2] should be set according to the
output range of the analog output unit.
● The value of the control interval (Ts): [S4+4] should be modified according to the input
updating interval (normally 0.1 seconds or more) of the analog input unit.
Example) If the value of [S4+4] is K10, Ts is 100 ms.
● Modify other parameters such as the control mode as necessary.
● The manipulated value (MV) stored in the operand [S4] is transferred to the digital value
output area WY that corresponds to the manipulated value of the analog output unit.
● In the manipulated value (MV) of [S4], the output internal calculated value (K0 to K10000) is
converted by the following formula, and stored.
10.12 EZPID (PID Operation: PWM Output Available)
10-50
WUME-FP7CPUPGR-12
Summary of Contents for FP7 Series
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