Mitsubishi Q00JCPU User Manual page 102

3
SEQUENCE PROGRAM CONFIGURATION AND
EXECUTION CONDITIONS
Remark
3
3.3 Settings for Creation and Execution of Multiple Sequence Programs
- 37
3.3.3 Low speed execution type program
(c) When low speed execution type programs could not be processed within
the excess time of constant scan or the low speed execution program
execution time
Program execution is suspended once and the remaining programs are executed
at the next scan.
(d) Low speed END processing
When the low speed execution type programs are all executed, low speed END
processing is performed.
Low speed END processing performs the following:
• Setting of special relays/special registers for low speed execution type
*1
programs
• Online program change of low speed execution type programs
• Measurement of low speed scan time
• Reset of watchdog timers for low speed execution type programs
When low speed END processing is finished, the first low speed execution type
program is executed again.
* 1 : The special relays/special registers for low speed execution type programs are given below.
SM330,SM404,SM405,SM510
SD430,SD510,SD528 to 535,SD544 to 547
POINT
When low speed execution type programs are executed, the constant scan may
be shifted by the maximum processing time of the executed instructions + low
speed END processing time .
Refer to Fig. 3.29 for differences between low speed END processing and END
processing.