10 PID CONTROL INSTRUCTIONS
10.2 PID Control Instructions (Inexact Differential)
1163
10
Performing PID operation
S(P).PIDCONT
These instructions measure the sampling cycle and perform PID operation when the execution command turns on.
■Execution condition
■Description, range, data type
*1 When specifying setting data by using a label, define an array to secure enough operation area and specify an element of the array
label.
■Applicable devices
• [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_PIDCONT(EN,s);
ENO:=SP_PIDCONT(EN,s);
FBD/LD
Instruction Execution condition
S.PIDCONT
SP.PIDCONT
Operand Description Range Data type Data type (label)
(s) Start device assigned to the I/O data area Word ANY16
*1
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)
RnCPU
RnENCPU
RnSFCPU RnSFCPURnPCPURnPCPU
(Standard) (Safety)
(Redundant)
(Process)
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