
Execution Times for STL Instructions
F-7
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
PID Basic execution time
Adder to recalculate (K
c
<T
s
/T
i
) and (K
c
<T
d
/T
s
) prior to the
PID calculation. Recalculation occurs if the value of K
c
, T
s
, T
i
,
or T
s
has changed from the previous execution of this
instruction, or on a transition to auto control.
750
1000
PLS Basic execution time:
PWM
PTO single segment
PTO multiple segment
57
67
92
R For length=1 and specified as a constant (e.g. R V0.2,1)
Execution time for operand = C
Execution time for operand = T
Execution time for all other operands
Otherwise,
Total execution time=Basic execution time +(LM)*(Length)
Basic execution time for operand = C, T
Basic execution time for all other operands
Length multiplier (LM) for operand = C
Length multiplier (LM) for operand = T
Length multiplier (LM) for all other operands
If the length is stored in a variable instead of being
specified as a constant, increase the basic execution time
by adding:
17
24
5
19
28
8.6
16.5
0.9
29
RCV Basic execution time 104
RET Total execution time =
Basic time + Σ (output operand handling time)
Basic execution time
Output operand handling time (bit operand)
Output operand handling time (byte operand)
Output operand handing time (word operand)
Output operand handling time (Dword operand)
13
21
14
18
20
RETI Basic execution time 23
RI Total = Basic time + (LM)<(Length)
Basic execution time
Length multiplier (local output)
Length multiplier (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
RLB Total = Basic time + (LM)<(Length)
Basic execution time
Length multiplier (LM)
42
0.6
RLD Total = Basic time + (LM)<(Length)
Basic execution time
Length multiplier (LM)
52
2.5
RLW Total = Basic time + (LM)<(Length)
Basic execution time
Length multiplier (LM)
49
1.7
Kommentare zu diesen Handbüchern