Mitsubishi Electric MELSEC iQ-R Series - Page 126

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2 CPU MODULE INSTRUCTIONS
2.7 Process Control Instructions
■Derivative control
■Dead time
■High selector
■Low selector
■Middle value selector
■Average value calculation
■Upper/lower limiter
■Variation rate limiter 1
■Variation rate limiter 2
■Two-position (on/off) control
■Three-position (on/off) control
■Dead band
■Program setter
Instruction symbol Processing details Reference
S.D Performs differential operation to the input data, and outputs the operation result. Page 1292 S.D
Instruction symbol Processing details Reference
S.DED Delays the output of the input data by the specified dead time. Page 1295 S.DED
Instruction symbol Processing details Reference
S.HS Outputs the maximum value of the input data. Page 1299 S.HS
Instruction symbol Processing details Reference
S.LS Outputs the minimum value of the input data. Page 1301 S.LS
Instruction symbol Processing details Reference
S.MID Outputs the intermediate value (the value between the maximum and minimum values) of the input
data.
Page 1303 S.MID
Instruction symbol Processing details Reference
S.AVE Calculates the mean (average) value of the input data, and outputs the operation result. Page 1306 S.AVE
Instruction symbol Processing details Reference
S.LIMT Applies a limiter with hysteresis to the output value. Page 1308 S.LIMT
Instruction symbol Processing details Reference
S.VLMT1 Limits the variation speed when the variation rate of the input (E1) exceeds the limit. Page 1311 S.VLMT1
Instruction symbol Processing details Reference
S.VLMT2 Holds the last value when the variation rate of the input (E1) exceeds the limit. Page 1314 S.VLMT2
Instruction symbol Processing details Reference
S.ONF2 Performs two-position (on/off) control.
The instruction performs the following processing steps: SV setting, tracking, MV correction, MV
output, and two-position (on/off) control.
Page 1317 S.ONF2
Instruction symbol Processing details Reference
S.ONF3 Performs three-position (on/off) control.
The instruction performs the following processing steps: SV setting, tracking, MV correction, MV
output, and three-position (on/off) control.
Page 1323 S.ONF3
Instruction symbol Processing details Reference
S.DBND Provides a dead band and performs output processing. Page 1330 S.DBND
Instruction symbol Processing details Reference
S.PGS Provides control output according to the SV and MV patterns. Page 1332 S.PGS