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10 PID CONTROL INSTRUCTIONS
10.3 PID Control Instructions (Exact Differential)
Registering the PID control data to the CPU module
PIDINIT(P)
These instructions store the PID control data by the number of loops used that is set in the specified device number and later
altogether in the CPU module.
■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:=PIDINIT(EN,s);
ENO:=PIDINITP(EN,s);
FBD/LD
Instruction Execution condition
PIDINIT
PIDINITP
Operand Description Range Data type Data type (label)
(s) Start device where the PID control data is set 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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