Mitsubishi Electric MELSEC iQ-R Series User Manual page 687

No. Name
SD518 Initial scan time
SD519
SD520 Current scan time
SD521
SD522 Minimum scan time
SD523
SD524 Maximum scan time
SD525
SD526 END processing time
SD527
SD528 Constant scan wait time
SD529
Data stored Details
Initial scan time (unit: ms) • The initial scan time is stored into SD518 and SD519 (it is
measured in increments of s).
Initial scan time (unit: s)
SD518: stores a value in the ms place (storage range: 0 to
65535)
SD519: stores a value in the s place (storage range: 0 to 999)
• These areas are cleared to 0 when the operating status of the
CPU module is switched from STOP to RUN.
Current scan time (unit: ms) • The current scan time is stored into SD520 and SD521 (it is
measured in increments of s).
Current scan time (unit: s)
SD520: stores a value in the ms place (storage range: 0 to
65535)
SD521: stores a value in the s place (storage range: 0 to 999)
Example: If the current scan time is 23.6ms, the following values
are stored:
SD520 = 23
SD521 = 600
• These areas are cleared to 0 when the operating status of the
CPU module is switched from STOP to RUN.
• In a redundant system, when the operating status of the CPU
module is RUN state, these areas are cleared to 0 at the
system switching.
Minimum scan time (unit: ms) • The minimum value of the scan time other than one for the
initial execution program is stored into SD522 and SD523 (it is
Minimum scan time (unit: s)
measured in increments of s).
SD522: stores a value in the ms place (storage range: 0 to
65535)
SD523: stores a value in the s place (storage range: 0 to 999)
• These areas are cleared to 0 when the operating status of the
CPU module is switched from STOP to RUN.
• In a redundant system, when the operating status of the CPU
module is RUN state, these areas are cleared to 0 at the
system switching.
Maximum scan time (unit: • The maximum value of the scan time other than one for the
ms) initial execution program is stored into SD524 and SD525 (it is
measured in increments of s).
Maximum scan time (unit: s)
SD524: stores a value in the ms place (storage range: 0 to
65535)
SD525: stores a value in the s place (storage range: 0 to 999)
• These areas are cleared to 0 when the operating status of the
CPU module is switched from STOP to RUN.
• In a redundant system, when the operating status of the CPU
module is RUN state, these areas are cleared to 0 at the
system switching.
END processing time (unit: • The time period from completion of a scan program until start
ms) of the next scan is stored into SD526 to SD527 (it is measured
in increments of s).
END processing time (unit:
SD526: stores a value in the ms place (storage range: 0 to
s)
65535)
SD527: stores a value in the s place (storage range: 0 to 999)
• These areas are cleared to 0 when the operating status of the
CPU module is switched from STOP to RUN.
• In a redundant system, when the operating status of the CPU
module is RUN state, these areas are cleared to 0 at the
system switching.
Constant scan wait time (unit: • The waiting time specified in the constant scan setting
ms) process is stored into SD528 and SD529 (it is measured in
increments of s).
Constant scan wait time (unit:
SD528: stores a value in the ms place (storage range: 0 to
s)
65535)
SD529: stores a value in the s place (storage range: 0 to 999)
• These areas are cleared to 0 when the operating status of the
CPU module is switched from STOP to RUN.
• In a redundant system, when the operating status of the CPU
module is RUN state, these areas are cleared to 0 at the
system switching.
Set by (setting
timing)
S (Every END)
S (Every END)
S (Every END)
S (Every END)
S (Every END)
S (Every END)
Appendix 5 List of Special Register Areas
A
APPX
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