Mitsubishi Electric MELSEC iQ-R Series, Programming Manual

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11 PROCESS CONTROL INSTRUCTIONS
11.1 Overview
For the loop type processing time, refer to the following.

MELSEC iQ-R CPU Module User's Manual (Application)
Blend PI control (SBPI) Used for processes which allow a constant manipulated value in
the long run even if it varies in the short term.
Ratio control (SR) Performs control so that a given manipulated value keeps a
constant ratio with other rates of change.
Two-position (on/off)
control (SONF2) Performs control so that the manipulated value is turned on or off
depending on whether the deviation is positive or negative.
Three-position (on/off)
control (SONF3) Performs control by outputting three-area signals for process
values.
This control can suppress rapid changes in the manipulated
value.
Batch counter (SBC) Performs valve on/off control in the process of batch charging to
the tank.
Program setter (SPGS) Outputs according to the temporal change of the value that has
been set in advance.
Manual output (SMOUT) Operates the operation terminal for manual output.
Monitor (SMON) Inputs process values to detect process errors such as upper/
lower limit alarms.
Manual output with monitor
(SMWM) Performs manual operation while inputting process values to
check that no error is caused.
Selector (SSEL) Used for signal selection.
Loop type Configuration Application
S.IN INPUT OUTPUT S.PHPL S.BPI S.OUT1
SET
PV
SV
MV
S.IN INPUT1 OUTPUT S.PHPL S.R S.OUT2
SET
PV
SV
MV
S.IN INPUT OUTPUT S.PHPL S.ONF2
SET
PV
SV MV
S.IN INPUT OUTPUT S.PHPL S.ONF3
SET
PV
SV MV
S.PSUM INPUT OUTPUT S.BC
S.PGS OUTPUT
MV
S.MOUT OUTPUT
MV
PV
S.IN INPUT S.PHPL OUTPUT
S.IN INPUT OUTPUT S.PHPL S.MOUT
MV PV
S.SEL
INPUT2
OUTPUT
INPUT1