Diagnostics, troubleshooting CM42-MAA101EBE00
22 Endress+Hauser
3.3 Diagnostic information via fieldbus
An overview of all the diagnostic messages transmitted over the bus can be found in
SD01325C under "Documents" on www.products.endress.com/cm42.
3.4 Adapting the diagnostic information
3.4.1 Classification of diagnostics messages
More detailed information on the current errors displayed is provided in the "DIAG/Errors /
Messages" menu. The red LED flashes if a diagnostic message assigned to error category F has
occurred. Furthermore, the error category of every diagnostic message is indicated in the status
bar of the display by the appropriate error letter.
In accordance with Namur specification NE 107, the diagnostics messages are characterized by:
• Message number
• Error category (letter in front of the message number)
– F = Failure. A malfunction has been detected.
The cause of the malfunction is to be found in the measuring point.
– C = Function check, no error
Maintenance work is being performed on the device. Wait until the work has been
completed.
– S = Out of specification. The measuring point is being operated outside specifications.
Operation is still possible. However, you run the risk of increased wear, shorter operating
life or lower accuracy levels. The cause of the problem is to be found outside the measuring
point.
– M = Maintenance required. Action must be taken as soon as possible
The device stills measures correctly. Immediate measures must not be taken. However,
proper maintenance efforts would prevent a possible malfunction in the future.
• Message text
If you contact the Service Department, please cite the message number only. Since you can
individually change the assignment of an error to an error category, the Service Department
cannot use this information.
3.4.2 Adapting the diagnostic information
All the diagnostics messages are assigned to specific error categories at the factory. Since other
settings might be preferred depending on the application, error categories and the effect errors
have on the measuring point can be configured individually. Furthermore, every diagnostic
message can be disabled.
1) Variable text [%V%S]: the relevant logbook is named.
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