Siemens SIMATIC S5 - Binary Scaler

S5-115F Manual STEP 5 Operations
3.5.2 Binary Scaler
This subsection describes how to program a binary scaler.
Example: The binary scaler (output Q 3.0) changes its state each time I 1.0 changes its signal state
from ”0” to ”1” (leading edge). Therefore, half the input frequency appears at the
output of the memory cell.
F 12.0
F 11.1 Q 3.0
LAD
Q 3.0F 12.0 F 11.1
I 1.0
F 11.1 F11.0
F 11.1
F 11.0
STL CSF
A I 1.0
AN F 11.0
= F 11.1
***
A F 11.1
S F 11.0
AN I 1.0
R F 11.0
NOP 0
***
A F 11.1
A Q 3.0
= F 12.0
***
A F 11.1
AN Q 3.0
AN F 12.0
S Q 3.0
A F 12.0
R Q 3.0
NOP 0
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Circuit DiagramTiming Diagram
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a
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Time
1
0
1
0
I 1.0
Q 3.0
Signal states
I 1.0
Q 3.0
F 12.0
I 1.0
F 11.0 F 11.1
F 11.1
I 1.0
F 11.0
S
R
Q
&
F 2.0 Q 3.0
F 11.1
F 11.1
& Q 3.0
S
R
Q
Q 3.0
F 12.0
&
I 1.0
( )
Q 3.0
S
R Q
F 12.0
( )
S
R Q
Note
Output in CSF or LAD is possible only if you enter the segment boundaries ”***” when
programming in STL.
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