Process Control Instructions And Data Configuration - Mitsubishi Electric MELSEC iQ-R Series Programming Manual

Process control instructions and data configuration

This section describes the data configurations used by process control instructions.
Data configuration in which loop tags are used
The process control instructions use control information common to each loop by storing it in common memory. The group of
this common information is called a loop tag, and the storage memory is called loop tag memory. Loop monitoring and tuning
can be performed by monitoring the loop tag.
Ex.
Block diagram of two-degree-of-freedom PID control (S2PID)
S.IN
Process
control
Output
instruction
Input
Operation Block
constant 1 memory 1
Loop tag memory
S.PHPL
Process
control
Output
instruction
Input
Operation Block
constant 2 memory 2
S.2PID
Process
control
Output
instruction
Input
Operation Block
constant 3 memory 3
11 PROCESS CONTROL INSTRUCTIONS
S.OUT1
Process
control
Output
instruction
Operation Block
constant 4 memory 4
11.1 Overview
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