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12.7 Special Register List
12
TROUBLESHOOTING
(1) Diagnostic Information
Table12.19 Special register
Number
Name
Meaning
Explanation
Set by
(When set)
Corresponding
CPU
SD0
Diagnostic
errors
Diagnosis error
code
• Error codes for errors detected by diagnostics are stored as
BIN data.
• Contents identical to latest fault history information.
S (Error)
QS
SD1
Clock time for
diagnosis
error
occurrence
Clock time for
diagnosis error
occurrence
• Stores the year (last two digits) and month when SD0 data
was updated as BCD 2-digit code.
S (Error)
SD2
• Stores the day and hour when SD0 data was updated as BCD
2-digit code.
SD3
• Stores the minute and second when SD0 data was updated
as BCD 2-digit code.
SD4
Error
information
categories
Error
information
category code
Category codes to identify what type of error information is
stored in the common information (SD5 to SD15) or in the
individual information (SD16 to SD26).
• The common information category codes store the following
codes:
0 : No error
1: Module No./Base No.
2: File name/Drive name
3: Time (value set)
4: Program error location
9: CC-Link Safety information
10: Module No./Station No.
• The individual information category codes store the following
codes:
0: No error
2: File name/Drive name
3: Time (value actually measured)
4: Program error location
5: Parameter number
6: Annunciator (F) number
9: Error information
10: CC-Link Safety information
11: Program abort information
12: File diagnostics information
S (Error)
b15
b7
b0
b8
to
to
Year (0 to 99) Month (1 to 12)
(Example) September, 2006
H0609
b15
b7
b0
b8
to
to
Day (1 to 31) Hour (0 to 23)
(Example) 10 a.m. on 25th
H2510
b15
b7
b0
b8
to
to
Minutes (0 to 59) Seconds (0 to 59)
(Example) 35 min. 48 sec.
H3548
b15
b7
b0
b8
to
to
Individual information
category codes
Common information
category codes
