Error Log - Omron CQM1H - PROGRAM Programming Manual

Error Log

8-6 Error Log
Error Log Area
Error log pointer
DM6569
DM6570
Error log record 1
(3 words used.)
DM6571
DM6572
to
DM6597
Error log record A
(3 words used.)
DM6598
DM6599
Error Log Storage
Methods
504
Note ** is 01 to 99 or 9F.
The error log registers the error code of any fatal or non-fatal error that occurs
in the PC. The date and time at which the error occurred are registered along
with the error code. Refer to page 501 for error codes.
The error log is stored in DM 6569 through DM 6599 as shown below.
Shows the number of error records (0 to 7) stored in the error log.
"0" means that there are no records stored.
Each error log record contains 3 words as follows:
Leading word
Leading word + 1
Leading word + 2
Error records will be stored even if pin 1 on the DIP switch on the CPU Unit is
turned ON to protect DM 6144 to DM 6655.
For details about error codes refer to 8-5 Operating Errors.
If the settings in PC Setup (DM 6655, bits 00 to 03) are set to disable saving
records to the error history (2 to F Hex), DM 6569 to DM 6599 can be used as
general-purpose read-only DM words.
The error log storage method is set in the PC Setup (DM 6655, bits 00 to 03).
Set any of the following methods.
1. 0 Hex: You can store the most recent 10 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.
2. 1 Hex: You can store only the first 10 error log records, and ignore any sub-
sequent errors beyond those 10.
Error log record 1
Error log record 2
Error log record 9
Error log record A
15 8 7
Error classification Error code
Min Sec
Day Hour
Error classification: 00 Hex: Nonfatal
80 Hex: Fatal
Oldest record lost
Error log record 1
Error log record 2
All records shifted
Error log record 6
Error log record 7
New record added
No changes after 10 records stored
Error generated
Error ignored
Section 8-6
0
Each stored in
2 digits BCD.