Pid Control Data - Mitsubishi Electric MELSEC-Q series Programming Manual

5.1

PID Control Data

PID control data is used to set the reference values for PID operation.
Store the PID control data into the CPU module with the PID control data setting
*1
instruction .
The PID control data is classified into two types, "common data for all loops" and "data for individual loops".
*1 The following are available as the PID operation instructions.
S.PIDCONT (incomplete derivative)
PIDCONT (complete derivative)
*2 The following are available as the PID control data setting instructions.
S.PIDINIT (incomplete derivative)
PIDINIT (complete derivative)
PID Control Data List
■For Basic model QCPU
• Incomplete derivative
Setting Data Data Item
data No.
Common 1 Number of
setting loops
data
2 Number of
loops in one
scan
5 PID CONTROL PROCEDURE
36
5.1 PID Control Data
Description Incomplete derivative
With PID limits
Setting
Range
Sets the number of loops 1 to 8
for which PID operation
will be executed.
Sets the number of loops 1 to 8
for which single PID
operation will be
executed when the
multiple loops reaches
the sampling cycle time.
*2
instruction before executing PID operation
Without PID limits
User Setting
Specification Range
Range
1 to 8 1 to 8
1 to 8 1 to 8
Processing
when Set Data
is Outside the
User
Allowable
Specification
Setting Range
Range
1 to 8 An error occurs
and PID operation
is not executed for
all loops.
1 to 8