Siemens SIMATIC S7-200 System Manual page 254

SIMATIC Instructions
INTERRUPT 3
Network 1
SMW68
==I
500
Network 2
SMW68
==I
1000
1 cycle
500 ms
Q0.0
4 cycles or 4 pulses
Figure 9-22 Example of a Pulse Train Output Using Single Segment Operation (continued)
9-66
If current cycle time
MOV_W
is 500 ms, then set
EN ENO
cycle time of 1000 ms
IN OUT SMW68
1000
and output 4 pulses.
PLS
EN ENO
0 Q
RETI
MOV_W
If current cycle time
is 1000 ms, then set
EN ENO
cycle time of 500 ms
500 IN OUT SMW68
and output 4 pulses.
PLS
EN ENO
0 Q0.X
Timing Diagram
1 cycle
1000 ms
Interrupt 3
occurs
LAD
Network 1
LDW=
MOVW
PLS
CRETI
Network 2
LDW=
MOVW
PLS
4 cycles or 4 pulses
S7-200 Programmable Controller System Manual
STL
SMW68, 500
1000, SMW68
0
SMW68, 1000
500, SMW68
0
Interrupt 3
occurs
A5E00066097-02