Specifications

Execution Times for STL Instructions
F-8
S7-200 Programmable Controller System Manual
C79000-G7076-C233-01
Table F-4 Execution Times for the STL Instructions (in µs)
Instruction
S7-200 CPU
(in µs)
Description
RRB Total = Basic time + (LM)<(Length)
Basic execution time
Length multiplier (LM)
42
0.6
RRD Total = Basic time + (LM)<(Length)
Basic execution time
Length multiplier (LM)
52
2.5
RRW Total = Basic time + (LM)<(Length)
Basic execution time
Length multiplier (LM)
49
1.7
S For length = 1 and specified as a constant (e.g., S V0.2, 1)
Execution time
Otherwise,
Total execution time=Basic execution time +(LM)*(Length)
Basic execution time for all other operands
Length multiplier (LM) for all other operands
If the length is stored in a variable instead of being a
constant, increase the basic execution time by adding:
5
27
0.9
29
SBR Basic execution time 0
SCRE Basic execution time 0.37
SCRT Basic execution time 17
SEG Basic execution time 30
SHRB Total = Basic time + (LM)<(Length)
Basic execution time
Length multiplier (LM)
140
1.6
SI Total = Basic time + (LM)<(Length)
Basic execution time
Length multiplier (LM) (local output)
Length multiplier (LM) (expansion output)
If the length is stored in a variable instead of being a
constant, increase the basic execution time by adding:
18
22
32
30
SLB Total = Basic time + (LM)<(Length)
Basic execution time
Length multiplier (LM)
43
0.7
SLD Total = Basic time + (LM)<(Length)
Basic execution time
Length multiplier (LM)
53
2.6
SLW Total = Basic time + (LM)<(Length)
Basic execution time
Length multiplier (LM)
51
1.3
SQRT Basic execution time
Maximum execution time
725
830
SRB Total = Basic time + (LM)<(Length)
Basic execution time
Length multiplier (LM)
43
0.7