Siemens SIMATIC S5 Manual page 169

IP 265
Example: A comparator compares a count (symbolic name: C VALUE1) with input word IW 66.
The current actual value of input parameter IW 66 can be changed as follows:
Move the cursor to the comparison value.
Select "Value" in the function key menu by pressing <F2>.
The control system flowchart is replaced on the screen with the input field "New actual value".
Enter the new actual value (0 to 999) in the input field (e.g. 110).
Confirm with <1> or <INSERT>.
Initial situation
=IW 66 C1
0
#C VALUE1
C2
100
The values "110" and "100" satisfy the compare condition ">". On the next IP 265 clock pulse,
output Q 0.1 goes to "1".
Example: Changing the status of an RS flipflop
Move the cursor to the language element.
Select "Value" in the function key menu by pressing <F2>.
Initial situation
3
I 0.0 S
I 0.1
R
0
The next IP 265 clock pulse sets the RS flipflop. Output Q goes to "1".
EWA 4NEB 812 6130-02a
2
>
Q 0.1
Q 0.2
Q
Testing and Simulation with COM 265
Result
2
>
=IW 66
C1
110
#C VALUE1
C2
100
Result
3
I 0.0
S
I 0.1 R Q
1
Q 0.1
Q 0.2
10-11