Mitsubishi 00JCPU User Manual page 71

<<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)
Scan execution type
program
Low-speed execution
type program A
Low-speed execution
type program B
Scan execution type
program
Low-speed execution
type program A
Low-speed execution
type program B
END processing END processing
0 4 11.5
4ms 4.5ms
1ms 1ms
2ms 1ms
Low-speed scan time
(12.5ms)
Low-speed END
processing
Figure 2.29 Asynchronous mode (SM330: off)
END END
processing processing
0 4 11.5
4ms 4.5ms
1ms
2ms 1ms
Low-speed scan time
(12.5ms)
Low-speed END
processing
Figure 2.30 Synchronous mode (SM330: on)
END processing END processing
18.5 25.5
4ms 4ms
1ms
1ms 2ms 3ms
Low-speed Low-speed
scan time scan time
(8ms) (8ms)
Low-speed END Low-speed END
processing processing
END END
processing processing
16.5 23.5
4ms 4ms
1ms
2ms
1ms
Low-speed scan time
(12ms)
Low-speed END
processing
CHAPTER2 SEQUENCE PROGRAMS
END processing
33.5 (ms)
5ms
1ms
END
processing
(ms)
29.5
5ms
1ms
2ms
2 - 26
2
3