User`s manual

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MELSEC-Q
1 OVERVIEW
(3) Free combination of process control instructions for application to a wide
range of control
As an option, a process control instruction can be inserted in a loop that links process control
instructions.
Add the extraction operation instruction (S.SQR) to perform the extraction operation of an input
signal to provide an output signal as shown below.
Regulator
FE flow meter
Liquid
Diaphragm valve
FIC
[Example of adding extraction operation instruction (S.SQR) to process control instructions]
Operation constant setting
Loop tag memory setting
R300R1000R240R140S.2PID R40
S.2PID instruction
Normal ON
SD1506R200R100R0
S.SQR
R40R100EM0V
Process control instruction
(Extraction operation
instruction)
S.SQR
instruction
Process control instruction
(2-degree-of-freedom PID
control instruction)
Normal ON
Added as
option
(4) Automatic detection of various alarms
A system can be configured safely since various alarms are detected automatically in the
system.
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