Pidcont Instruction - Mitsubishi MELSEC-L series Programming Manual

6.1.2

PIDCONT instruction

S(P)_PIDCONT
Structured ladder
S_PIDCONT
EN ENO
s
Input argument EN:
Executing condition
s: Start number of the device that is assigned in I/O data area
Output argument ENO: Execution result
Setting
data
Function
(1) This instruction measures sampling cycle and performs PID operation at instruction
execution.
(2) This instruction performs PID operation based on the set value (SV) and process value (PV)
in the I/O data area set to the device number specified by
operation result to the automatic manipulated value (MV) area in the I/O data area.
(3) PID operation is performed in response to the first execution of the PIDCONT instruction
after the set sampling cycle time has elapsed.
ST
ENO:= (EN, s);
S_PIDCONT
Internal device
R, ZR
Bit Word
−
s
6.1 PID Control Instruction (Inexact Differential)
P: Executing condition
indicates any of the following
instructions.
S_PIDCONT
SP_PIDCONT
:Bit
:ANY16
:Bit
J \
U \G
Bit Word
−
or later, and stores the
s
6.1.2 PIDCONT instruction
S_PIDCONT
S_PIDCONT
:
Zn Constant Others
6-7
6