Mitsubishi Electric QS001CPU User Manual page 202

12
TROUBLESHOOTING
(4) Scan information
Number Name
SD520
Current scan
time
SD521
SD524
Minimum
scan time
SD525
SD526
Maximum
scan time
SD527
SD540
END
processing
time
SD541
SD542
Constant
scan wait
time
SD543
SD548
Scan
program
execution
time
SD549
12
12.7 Special Register List
- 95
Table12.24 Special register
Meaning
• The current scan time is stored into SD520 and SD521.
Current scan
(Measurement is made in 100 s units.)
time (in 1 ms
SD520: Stores the value of ms. (Storage range: 0 to 6553)
units)
SD521: Stores the value of s. (Storage range: 0 to 900)
(Example) When the current scan time is 23.6ms, the following
values are stored.
Current scan
SD520 = 23
time (in 100 s
SD521 = 600
units)
• The accuracy of processing time of scantime is
Minimum scan
• Stores the minimum value of the scan time into SD524 and
time (in 1 ms
SD525. (Measurement is made in 100 s units.)
units)
SD524: Stores the ms place. (Storage range: 0 to 6553)
Minimum scan
SD525: Stores the s place. (Storage range: 0 to 900)
time (in 100 s
• The accuracy of processing time of scantime is
units)
Maximum scan
• Stores the maximum value of the scan time into SD526 and
time (in 1 ms
SD527. (Measurement is made in 100 s units.)
units)
SD526: Stores the ms place. (Storage range: 0 to 6553)
Maximum scan
SD527: Stores the s place. (Storage range: 0 to 900)
time (in 100 s
• The accuracy of processing time of scantime is
units)
END
• Stores the time from when the scan program ends until the
processing time
next scan starts into SD540 and SD541.
(in 1 ms units)
(Measurement is made in 100 s units.)
SD540: Stores the ms place. (Storage range: 0 to 6553)
END
SD541: Stores the s place. (Storage range: 0 to 900)
processing time
• The accuracy of END processing time is
(in 100 s
units)
Constant scan
• Stores the wait time for constant scan setting into SD542 and
wait time (in 1
SD543.
ms units)
(Measurement is made in 100 s units.)
SD542: Stores the ms place. (Storage range: 0 to 6553)
Constant scan
SD543: Stores the s place. (Storage range: 0 to 900)
wait time (in
• The accuracy of constant scan wait time is
100 s units)
Scan program
• Stores the execution time of a scan program during one scan
execution time
into SD548 and SD549.
(in 1 ms units)
(Measurement is made in 100 s units.)
SD548: Stores the ms place. (Storage range: 0 to 6553)
Scan program
SD549: Stores the s place. (Storage range: 0 to 900)
execution time
• Stored every scan.
(in 100 s
• The accuracy of scan program execution time is
units)
Explanation
0.1ms.
0.1ms.
0.1ms.
0.1ms.
0.1ms.
0.1ms.
Set by Corresponding
(When set) CPU
S (Every END)
S (Every END)
S (Every END)
QS
S (Every END)
S (Every END)
S (Every END)