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3.3 Settings for Creation and Execution of Multiple Sequence Programs
3.3.5 Fixed scan execution type program
3
SEQUENCE PROGRAM CONFIGURATION AND
EXECUTION CONDITIONS
(e) When interrupt/fixed scan execution type program is executed for execution
time measurement, etc.
When an interrupt/fixed scan execution type program is executed to measure
scan time or execution time using special registers, the time of the above program
is added to the measurement time. The following values stored into the special
registers and the monitor values (measurement times) of GX Developer increase
when the above program is executed.
• Special registers
SD520, SD521 : Current scan time
SD522, SD523 : Initial scan time
SD524, SD525 : Minimum scan time
SD526, SD527 : Maximum scan time
SD528, SD529 : Current scan time for low speed execution type
program
Note3.27
SD532, SD533 : Minimum scan time for low speed execution type
program
Note3.27
SD534, SD535 : Maximum scan time for low speed execution type
program
Note3.27
SD540, SD541 : END processing time
SD542, SD543 : Constant scan wait time
SD544, SD545 : Cumulative execution time for low speed execution type
program
Note3.27
SD546, SD547 : Execution time low speed execution type
program
Note3.27
SD548, SD549 : Scan execution type program execution time
SD551, SD552 : Service interval time
Note3.28
Note26
• Monitor values of GX Developer
Execution time measurement
Scan time measurement
Constant scan
Note26
Redundant
Universal
UD
Note3.27
Note3.27
Universal
UD
Note3.28
Since the Universal model QCPU cannot use module service interval time read, no special
register for module service interval time read is provided.
Universal
UD
Note3.28
Since the Redundant CPU and Universal model QCPU cannot use low speed execution type
programs, no special register for low speed execution type programs is provided.
Redundant
Note3.27
Universal
UD
Note3.27
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