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4-6SectionError Log
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2. In CPU Boards without a clock, the time that the error occurred will be set to
all zeroes.
Error Log Storage Methods
The error log storage method is set in the PC Setup (bits 00 to 03 of DM 6655).
Set any of the following methods.
1, 2, 3... 1. DM 6655 bits 00 to 03 set to 0:
Stores the most recent 7 error log records and discard older records. This is
achieved by shifting the records as shown below so that the oldest record
(record 0) is lost whenever a new record is generated.
Error log record 6
Error log record 7
Error log record 1
Error log record 2
Lost
New record added
All records shifted
2. DM 6655 bits 00 to 03 set to 1:
Stores only the first 7 error log records, and ignores any subsequent errors
beyond those 7.
3. DM 6655 bits 00 to 03 set to any value other than 0 or 1:
Disables the log so that no records are stored.
The default setting is the first method. Refer to the preceding page for details on
the error log settings in DM 6655.
Clearing the Error Log
To clear the entire error log, turn ON SR 25214 from a Programming Device. (Af-
ter the error log has been cleared, SR 25214 will turn OFF again automatically.)