Mitsubishi Electric MELSEC iQ-R Series, Programming Manual

Page: 1169 / 2110

10 PID CONTROL INSTRUCTIONS
10.2 PID Control Instructions (Inexact Differential)
1167
10
Starting the operation of specified loop number
S(P).PIDRUN
These instructions start the PID operation of the specified loop number.
■
Execution condition
Setting data
■
Description, range, data type
■
Applicable devices
Processing details
• These instructions start the PID operation of the loop number in the device specified by (s). These instructions are used to
re-execute the PID operation of the loop number that has been stopped by the S(P).PIDSTOP instruction.
• The S(P).PIDRUN instruction, if executed for a loop number already in progress of PID operation, performs no processing.
Operation error
• [RnPCPU (redundant)] If these instructions are used in a program executed in both systems, there are restrictions on their operation in the standby system
when the redundant system is in backup mode. (  MELSEC iQ-R CPU Module User's Manual (Application))
Ladder ST
ENO:=S_PIDRUN(EN,s);
ENO:=SP_PIDRUN(EN,s);
FBD/LD
Instruction Execution condition
S.PIDRUN
SP.PIDRUN
Operand Description Range Data type Data type (label)
(s) Loop number to be stopped 1 to 32 16-bit unsigned binary ANY16
EN Execution condition

Bit BOOL
ENO Execution result

Bit BOOL
Operand Bit Word Double word Indirect
specification
Constant Others
X, Y, M, L,
SM, F, B, SB,
FX, FY J  \  T, ST, C, D, W,
SD, SW, FD, R,
ZR, RD U  \G  , J  \  ,
U3E  \(H)G 
Z LT, LST,
LC LZ K, H E $
(s)            
Error code
(SD0) Description
3405H The loop number specified by (s) does not exist.
(s) is outside the range from 1 to 32.
3422H The S(P).PIDINIT and S(P).PIDCONT instructions are not executed before the S(P).PIDRUN instruction.
RnCPU RnENCPU
RnSFCPU RnSFCPU RnPCPU RnPCPU
(Standard) (Safety) (Redundant) (Process)
(s)
EN ENO
s