Mitsubishi Electric MELIPC MI5000 Series User Manual page 97

8
DIAGNOSTIC AND MAINTENANCE
FUNCTIONS
This chapter shows the various RAS functions.
8.1
Self Diagnostics Function
This function diagnoses errors with the product.
This can prevent erroneous operation with the product, as well as carry out detection and replacement when an error is
detected.
Self-diagnosis locations
The following items are diagnosed at startup and during operation of this product.
Diagnostic timing Diagnosis locations
Startup Memory, CPU fan, CPU temperature
During operation
Self diagnostics timing
When the product power is turned ON, or when an error is detected during operation, the self-diagnosis function detects
problems and displays error messages. Additionally, depending on the details of the problem, this product will be shut down or
restart.
Depending on the status of the error, detection of the error using self-diagnostics may not be possible.
Additionally, configure external safety circuits to ensure that the entire system operates safely even if stop
processing using self diagnostics does not occur.
Data processing of a user program continues even when the operating status of this product is remote STOP
due to the self-diagnosis function. To separate the processing of a user program by operating status, use the
C Controller module dedicated function (CCPU_GetCpuStatus). (MELIPC MI5000 Series Programming
Manual (VxWorks))
Checking errors
The error conditions for the overall system, and errors being currently generated can be checked in the MELIPC diagnostics
window. (MI Configurator Operating Manual)
Information of errors that occurred are also stored in the special relays and special registers. (Page 257 List of Special
Relays, Page 258 List of Special Registers)
Error information
• MELIPC diagnostics error information displays up to a maximum of 16 errors currently occurring on the product. However,
when an additional error occurs after a stop error, the error information for the additional error is not updated.
• The history of errors that occur is can be checked in the event history. ( Page 111 Event History Function)
The maximum number of these that can be displayed from the product is 15 for continuation errors, and 1 for
stop errors. When 15 continuation errors are displayed and another one occurs, the new continuation error is
not displayed. When an error with the same code has already been displayed, the date and time of
occurrence and detailed information of the relevant error are not updated.
8 DIAGNOSTIC AND MAINTENANCE FUNCTIONS
8.1 Self Diagnostics Function
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