10 PID CONTROL INSTRUCTIONS
10.3 PID Control Instructions (Exact Differential)
1177
10
Stopping the operation of specified loop number
PIDSTOP(P)
These instructions stop the PID operation of the loop number in the device specified by (s).
■Execution condition
■Description, range, data type
■Applicable devices
• These instructions stop the PID operation of the loop number in the device specified by (s). The loop stopped by the
PIDSTOP(P) instruction does not restart PID operation even if the PIDINIT(P) instruction is executed.
• Each instruction holds operation data while the loop is stopped.
• [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:=PIDSTOP(EN,s);
ENO:=PIDSTOPP(EN,s);
FBD/LD
Instruction Execution condition
PIDSTOP
PIDSTOPP
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 Out-of-range data is set in the device specified by (s).
• The specified loop number does not exist.
• The specified value is other than 1 to 32.
3422H The PIDINIT(P) and PIDCONT(P) instructions are not executed before the PIDSTOP(P) instruction.
RnCPU
RnENCPU
RnSFCPU RnSFCPURnPCPURnPCPU
(Standard) (Safety)
(Redundant)
(Process)
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