Mitsubishi Q00JCPU User Manual page 99

3
SEQUENCE PROGRAM CONFIGURATION AND
EXECUTION CONDITIONS
(b) When there is excess time after completion of all low speed execution type
Low speed execution
type program operation
Asynchronized tracking
mode
Synchronized tracking
mode
program execution within one scan
The processing performed after completion of low speed execution type program
operation varies depending on the ON/OFF status of the special relay SM330 and
low speed execution type program execution condition.
1) Asynchronized tracking mode (SM330 = OFF)
The low speed execution type program operation is continued within excess
time.
2) Synchronized tracking mode (SM330 = ON)
If there is excess time, operation is started at the next scan without the low
speed execution type program operation being continued.
Table3.1 Operation mode and setting
Set status of
SM330
mode
OFF
ON
* 1 : Low speed execution type programs are executed repeatedly during the excess time of constant
scan.
Hence, the low speed execution type program execution time differs between scans.
( Diagram 3.30)
* 2 : Low speed execution type programs are executed repeatedly during the preset low speed
execution type program execution time.
Hence, the scan time differs between scans.(
* 3 : The waiting time is the excess time after completion of low speed END processing.
When the preset constant scan time is reached, the scan execution type program is executed.
Hence, the scan time is invariable at each scan.(
* 4 : The excess time after completion of low speed END processing is ignored, and the scan execution
type program operation is started.
Hence, the scan time differs between scans.(
3.3 Settings for Creation and Execution of Multiple Sequence Programs
Low speed execution type program execution condition
When constant scan is set
Low speed execution type
*1
programs are re-executed
Constant scan waiting time
*3
occurs
Diagram 3.32)
Diagram 3.31)
Diagram 3.33)
3.3.3 Low speed execution type program
When low speed program
execution time is set
Low speed execution type
*2
programs are re-executed
Scan execution type program
*4
operation starts
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