Siemens SIMATIC S5 Manual page 171

IP 265
Triggering timers and counters (<F4> "Trigger")
All retentive language elements can be triggered within the segments.
By pressing function key <F4> "Trigger" in the "Simulator" form's softkey menu, you can
• restart timers (the input conditions for S and R must be fulfilled if the timer is to be restarted on
the next clock pulse, Table 9-8)
• restart counters
• affect loopbacks interactively ( )
Example: Starting an extended pulse timer within a segment
Move the cursor to the language element.
Select "Trigger" in the softkey menu by pressing <F4>.
Initial situation
1
&
KT 5.0
The timer is set to the current time "5" (50 ms), and started on the next IP 265 clock pulse.
EWA 4NEB 812 6130-02a
Keyboard entry
F4
Simulates
2
positive edge
1 - - - V
at Set input S
> S
TV
R Q
0
Testing and Simulation with COM 265
Result
1
&
KT 5.0
2
1 - - - V
> S
TV
R Q
5
10-13