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3.1 Sequence Program
3.1.3 Interrupt programs
3
SEQUENCE PROGRAM CONFIGURATION AND
EXECUTION CONDITIONS
2) High Performance model QCPU, Process CPU, Redundant CPU or
Universal model QCPU
• 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
SD532, SD533 : Minimum scan time for low speed execution type
program
SD534, SD535 : Maximum scan time for low speed execution type
program
SD540, SD541 : END processing time
SD542, SD543 : Constant scan wait time
SD544, SD545 : Cumulative execution time for low speed execution type
programs
SD546, SD547 : Execution time for low speed execution type programs
SD548, SD549 : Scan execution type program execution time
SD551, SD552 : Service interval time
• Monitor values of GX Developer
Execution time measurement
Scan time measurement
Constant scan
Note14
Note14
Universal
UD
Redundant
Note3.14
Universal
UD
Note3.15
Since the Redundant CPU or Universal model QCPU cannot use low speed execution type
programs, no special register for the low speed execution type programs is provided.
Universal
UD
Redundant
Since the Universal model QCPU cannot use service interval time read, no special register for
service interval time read is provided.
Universal
UD