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5.6.2
PIDCONT instruction
PIDCONT(P)
Structured ladder
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);
PIDCONT
Internal device
R, ZR
Bit
Word
−
S
5.6 PID Control Instruction (Exact Differential)
P: Executing condition
indicates any of the following
instructions.
PIDCONT
PIDCONTP
:Bit
:ANY16
:Bit
J
\
U
\G
Bit
Word
−
or later, and stores the
○
S
5.6.2 PIDCONT instruction
PIDCONT
PIDCONT
:
Zn
Constant Others
5
5-179
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