Mitsubishi 00JCPU - Page 71

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CHAPTER2 SEQUENCE PROGRAMS
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3
2.3 Settings When Program is Divided 2.3.3 Low-speed execution type program
<<When a low-speed program execution time value is set>>
The following timing charts show the CPU module operation when low-speed execution type programs are executed
under the conditions given below.
• Low-speed program execution time value : 3ms
• Total execution time of scan execution type programs : 4 to 5ms
• Execution time of the low-speed execution type program A : 1ms
• Execution time of the low-speed execution type program B : 3ms
• END processing/low-speed END processing : 0ms (assumed to be 0ms for easy understanding)
Figure 2.29 Asynchronous mode (SM330: off)
Figure 2.30 Synchronous mode (SM330: on)
0 18.5 25.5 33.5
(ms)
4ms
1ms
2ms
4.5ms
1ms
4ms
411.5
2ms
1ms1ms
1ms
1ms
4ms 5ms
3ms
(12.5ms) (8ms)(8ms)
Scan execution type
program
Low-speed execution
type program A
Low-speed execution
type program B
Low-speed
scan time
Low-speed scan time
Low-speed
scan time
Low-speed END
processing
Low-speed END
processing
Low-speed END
processing
END processing END processing END processing END processing END processing
0 16.5 23.5 29.5
(ms)
4ms
1ms
2ms
4.5ms
1ms
4ms
2ms
411.5
1ms
1ms1ms
5ms
2ms
4ms
(12.5ms)
(12ms)
Scan execution type
program
Low-speed execution
type program A
Low-speed execution
type program B
Low-speed scan time Low-speed scan time
Low-speed END
processing
Low-speed END
processing
END
processing
END
processing
END
processing
END
processing
END
processing