Chapter 9 Complete Derivative Pid Control Instructions And Program Examples; Pid Control Instructions; Pid Control Data Settings - Mitsubishi Electric MELSEC-Q series Programming Manual

9
COMPLETE DERIVATIVE PID CONTROL
INSTRUCTIONS AND PROGRAM EXAMPLES
This chapter explains the PID control instruction usage and program examples for implementing PID control.
9.1

PID Control Instructions

PID control data settings

Applicable CPU
QCPU
Programmable controller CPU
Basic High Performance
*1
 
*1 First five digits of serial No. are 04122 or later
[SET DATA]
■Description and data type
Set Data
S
■Usable device
Set Data Usable Devices
Internal Devices
(System, User)
Bit

S
[FUNCTIONS]
• The PID control data for the number of loops to be used, which are set to the device number specified by
entered in the CPU module in a batch, thereby making the PID control possible. ( Page 36 PID Control Data)
• When the PIDINIT(P) instruction is executed at more than one point within a scan, the setting value of the PIDINIT(P)
instruction closest to the PIDCONT(P) instruction is effective.
• The PIDINIT(P) instruction must be executed before the PIDCONT(P) instruction. PID control is not possible if the
PIDINIT(P) instruction has not been executed.
9 COMPLETE DERIVATIVE PID CONTROL INSTRUCTIONS AND PROGRAM EXAMPLES
72
9.1 PID Control Instructions
Universal

Description
First number of devices in which data for PID control is set
File Register
Word

Process CPU

MELSECNET/10 (H) Special
Direct J\ Function
Module
Bit Word
U\G

LCPU
Redundant CPU
 
Data Type
16-bit binary
Index
Register Zn
QnA Q4AR
 
Constant Other
or later, are
S