Omron CQM1H-CLK21 - Manual (Page 234)

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Commands and Responses for Controller Link Units Section 6-5
The configuration of each error record is as follows:
Error code, details: These parameters show the contents of errors. For
details, refer to 9-3-2 Error Codes.
Date and time: These parameters show the seconds, minutes, hour (0 to
23), date, month, and year (the rightmost two digits) in BCD specifying the
time that the error occurred.
Note 1. If the PLC does not have the specified number of records, all the records
that have been stored in the PLC up to the point that the command is exe-
cuted will be returned.
2. If there is no error log registered, a response code of 1103 (Hex) will be
returned.
6-5-12 ERROR LOG CLEAR
Clears all error log records and sets the error log pointer to 0.
Command Block
Response Block
Minute
Second
Day Hour Year Month
Details Error code
1st byte 10th byte
Command
format
03 21
Command
format
03 21
Response
code