Mitsubishi Electric MELSEC iQ-R C User Manual page 82

Error log area (Un\G150 to 311)
The history of errors which have occurred on the C intelligent function module can be checked in this area.
Name
Error count
Error log write pointer
Error log 1 Error code
System area
Time
System area
Error log 2 to 16
■Error count (Un\G150)
Cumulative number registered in error log area is stored.
When the maximum value is exceeded, the value is fixed to 65535 (maximum).
■Error log write pointer (Un\G151)
The error log No. (in which the latest error is registered) is stored.
• 0: No error (No error log registered)
• 1 or more: Error log No. registering the latest error log
*1 When the pointer value is '16', it indicates that the latest error has been registered into the error log area of 16.
The registered errors will become minor errors (maximum 15) and moderate/major errors (1).
If a new minor error occurs when a maximum of 15 minor errors have been indicated, the newly occurred minor error will not
be registered. And, if the error with the same error code is already registered, the date and time of occurrence and the
detailed information of the relevant error is not updated. Even if a new error occurs after the occurrence of moderate/major
errors, the new error will not be registered.
APPX
80
Appendix 3 Buffer Memory
Address Description
Un\G150 This is the cumulative number of errors registered in the error log area.
Un\G151 This is the error log number registered to the most recent error log.
Un\G152 The error code is stored.
Un\G153 Use prohibited
Un\G154 b0 to 7: Time zone and summer time flag
b8 to 15: System area
Un\G155 b0 to 7: Last two digits of the year
b8 to 15: Month: 01 to 12
Un\G156 b0 to 7: Day: 01 to 31
b8 to 15: Time: 00 to 23
Un\G157 b0 to 7: Minute: 00 to 59
b8 to 15: Seconds: 00 to 59
Un\G158 b0 to 7: Day of week(0: Sunday, 1: Monday, 2: Tuesday, 3: Wednesday, 4: Thursday,
5: Friday, 6: Saturday)
b8 to 15: First two digits of the year
Un\G159 b0 to 7: First two digits of the millisecond
b8 to 15: Last two digits of the millisecond
Un\G160 Use prohibited
Un\G161
Un\G162 to 311 Details are the same as error log 1.
*1