Mitsubishi MELSEC-Q series Programming Manual page 44

Instruction
Category
symbol
S.SPI
S.IPD
S.BPI
Control
operation
instruction
S.R
S.PHPL
S.LLAG
42
Symbol
S.SPI S1 D1 S2 D2
S_SPI
EN ENO
s1 d1
s2 d2
s3
ENO:=S_SPI(EN,s1,s2,s3,d1,d2);
S1 D1 S2 D2
S.IPD
S_IPD
EN ENO
s1 d1
s2 d2
s3
ENO:=S_IPD(EN,s1,s2,s3,d1,d2);
S.BPI
S1 D1 S2 D2
S_BPI
EN ENO
s1 d1
s2 d2
s3
ENO:=S_BPI(EN,s1,s2,s3,d1,d2);
S.R S1 D1 S2 D2
S_R
EN ENO
s1 d1
s2 d2
s3
ENO:=S_R(EN,s1,s2,s3,d1,d2);
S.PHPL S1 D1 S2 D2
S_PHPL
EN ENO
s1 d1
s2 d2
ENO:=S_PHPL(EN,s1,s2,d1,d2);
S.LLAG S1 D1 S2 D2
S_LLAG
EN ENO
s1 d1
s2 d2
ENO:=S_LLAG(EN,s1,s2,d1,d2);
Processing details
S3
Judges between the operating time and
hold time, and if it is the operating time,
performs SV setting processing,
tracking processing, gain Kp operation
processing, SPI operation and deviation
check.
S3
Performs I-PD operation.
Performs SV setting processing,
tracking processing, gain Kp operation
processing, IPD operation and deviation
check.
S3
Performs blend PI operation.
Performs SV setting processing,
tracking processing, gain Kp operation
processing, BPI operation and deviation
check.
S3
Performs engineering value conversion,
tracking processing, change rate limiter
and ratio operation on the input data.
Conducts an Upper limit value/lower
limit value check of the PV output by the
S.IN instruction.
Conducts lead-lag compensation for
input data and outputs the operation
results.
Number of
Reference
steps
9 Page 115
9 Page 122
9 Page 130
8 Page 137
8 Page 142
8 Page 148