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6.1 PID Control Instruction (Inexact Differential)
6.1.4 PIDPRMW instruction
S_PIDPRMW
6.1.4 PIDPRMW instruction
S_PIDPRMW
Function
This instruction changes the operation parameter of the loop number specified by 'n' to the PID
control data stored in the devices starting from the device number specified by .
(1) PID control data
*1 : For the PID operational expressions set for Operational expression selection, refer to MELSEC-Q/L/QnA
Programming Manual (PID Control Instructions).
S(P)_PIDPRMW
P: Executing condition
:
indicates any of the following
instructions.
S_PIDPRMW SP_PIDPRMW
Input argument EN:
Executing condition :Bit
n:
Loop number to be changed :ANY16
s:
Start number of the device that stores PID control data to be
changed
:ANY16
Output argument ENO:
Execution result :Bit
Setting
data
Internal device
R, ZR
J\
U\G
Zn
Constant
K, H
Others
Bit Word Bit Word
n
Device Data item Description
Setting range
Setting
side
Processing when the
setting data are outside the
setting range
With PID limits
Without PID
limits
+0
Operational
expression
selection
Select the PID operational
expression.
*1
0: Forward
operation
1: Reverse
operation
0: Forward
operation
1: Reverse
operation
User
An error occurs and the PID
operation for the
corresponding loop is not
performed.
+1
Sampling cycle
(T
S)
Set the PID operation
cycle.
1 to 6000
(unit: 10ms)
1 to 6000
(unit: 10ms)
User
Structured ladder/FBD
ST
S_PIDPRMW
EN ENO
n
s
S_PIDPRMW
(EN, n, s);ENO:=
s
s
s
s