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Device
Data item
(s)+(m+0)
Operational
expression
selection
(s)+(m+1)
Sampling cycle
(T
)
S
(s)+(m+2)
Proportional
constant (K
)
P
(s)+(m+3)
Integral constant
(T
)
I
(s)+(m+4)
Derivative constant
(T
)
D
(s)+(m+5)
Filter coefficient ()
(s)+(m+6)
MV lower limit
(MVLL)
(s)+(m+7)
MV upper limit
(MVHL)
(s)+(m+8)
MV change rate
limit (MVL)
(s)+(m+9)
PV change rate
limit (PVL)
*1 For the PID operational expression set in the operational expression selection, refer to the following.
MELSEC-Q/L/QnA Programming Manual (PID Control Instructions)
Precautions
The following table shows the CPU modules applicable to the PID control instructions (inexact differential) and the PID control
instructions (exact differential).
CPU module model
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
The first five digits of the serial number are '05031' or lower.
QCPU
The first five digits of the serial number are '05032' or higher.
Redundant CPU
Universal model QCPU
LCPU
: Applicable, : Not applicable
Description
Setting range
With PID limits
The same as Setting data for No. 1 loop
m=(n-1)10+2
n: number of loops
Setting
side
Without PID
limits
Inexact differential
6 PID CONTROL INSTRUCTION
6.2 PID Control Instruction (Exact Differential)
Processing when the
setting data are outside
the setting range
Exact differential
243
6
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