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Device
Data name
I/O data area for No. n loop
Set
SV
[0]
S
value
Process
PV
[1]
S
value
Automatic
manipulated
MV
[2]
S
value
Process
value
PVf
[3]
S
after
filtering
Manual
manipulated
MV
[4]
MAN
S
value
Manual/
MAN/
automatic
[5]
S
AUTO
selection
Alarm
ALARM
[6]
S
[7]
S
PID control work area
to
(reserved by the system)
[22]
S
Precautions
The following table shows the CPU modules applicable to the PID control instructions (inexact
differential) and the PID control instructions (exact differential).
High Performance model
QCPU
Universal model QCPU
Description
With PID limits
I/O data area for No. 1 loop
m=(n-1)
23+10
n: number of loops
CPU module model
The first five digits of the serial number are
'05031' or lower.
The first five digits of the serial number are
'05032' or higher.
5.5 PID Control Instruction (Inexact Differential)
Setting range
Setting
Without PID
side
limits
–
–
Inexact
differential
: Applicable,
5.5.2 PIDCONT instruction
S_PIDCONT
Processing when the
setting data are outside the
setting range
–
Exact
differential
: Not applicable
5-167
5
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