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6.1 PID Control Instruction (Inexact Differential)
6.1.2 PIDCONT instruction
S_PIDCONT
m=(n-1) 23+10
n: number of loops
Precautions
The following table shows the CPU modules applicable to the PID control instructions (inexact
differential) and the PID control instructions (exact differential).
: Applicable, : Not applicable
Device Data name Description
Setting range
Setting
side
Processing when the
setting data are outside the
setting range
With PID limits
Without PID
limits
I/O data area for No. n loop
+(m+0)
Set
value
SV
The same as I/O data area for No. 1 loop
+(m+1)
Process
value
PV
+(m+2)
Automatic
manipulated
value
MV
+(m+3)
Process
value
after
filtering
PVf
+(m+4)
Manual
manipulated
value
MV
MAN
+(m+5)
Manual/
automatic
selection
MAN/
AUTO
+(m+6)
Alarm
ALARM
+(m+7)
PID control work area
(reserved by the system)
–––
to
+(m+22)
CPU module model
Inexact
differential
Exact
differential
Basic model QCPU
The first five digits of the serial number are
'04121' or lower.
The first five digits of the serial number are
'04122' or higher
High Performance model
QCPU
The first five digits of the serial number are
'05031' or lower.
The first five digits of the serial number are
'05032' or higher.
Redundant CPU
Universal model QCPU
LCPU
s
s
s
s
s
s
s
s
s