3
- 38
3.3 Settings for Creation and Execution of Multiple Sequence Programs
3.3.3 Low speed execution type program
3
SEQUENCE PROGRAM CONFIGURATION AND
EXECUTION CONDITIONS
When constant scan is set
The following timing charts show the operations performed when low speed execution
type programs are executed under the conditions given below.
• Constant scan time : 8ms
• Total execution time of scan execution type programs : 4 to 5ms
• Execution time of low speed execution type program A : 1ms
• Execution time of low speed execution type program B : 3ms
• END processing/low speed END processing : 0ms (assumed to be 0ms for easy
understanding)
Figure 3.31 Asynchronized tracking mode (SM330: OFF)
Figure 3.32 Synchronized tracking mode (SM330: ON)
0.5ms
2.5ms
0.5ms
(13ms)
(8.5ms)
(8.5ms)
Scan execution type
program
Low speed execution
type program A
Low speed execution
type program B
Constant scan excess
time
Low speed
scan time
Low speed
scan time
Low speed
scan time
Low speed END
processing
execution
Low speed END
processing
execution
Low speed END
processing
execution
0.5ms
0.5ms
1ms
2ms
0
8
16
END processing
24
32
(ms)
4.5ms
END processing
4ms
END processing
4ms
END processing
4ms
1.5ms
1.5ms
1ms
1ms
0.5ms
0.5ms
1ms
1ms
5ms
0
8
16
END processing
24
32
(ms)
1ms
4.5ms
END processing
4ms
END processing
4ms
5ms
END processing
4ms
0.5ms
2.5ms
0.5ms
3ms
1ms
2.5ms
0.5ms
0.5ms
3.5ms
(13ms)
(15.5ms)
Scan execution type
program
Low speed execution
type program A
Low speed execution
type program B
Constant scan excess
time
Low speed scan time
Low speed scan time
Low speed END
processing execution
Low speed END
processing execution
Содержание Q00CPU
Страница 1: ......
Страница 2: ......
Страница 972: ...Index 6 Memo ...
Страница 975: ......
Страница 976: ......