9. Messages and diagnosis
During the initialization phase, the Type 3785 PROFIBUS-PA Positioner provides the best
possibilities for diagnosis. In the automatic mode, detailed tests are carried out to check the
attachment and the positioner’s reaction while taking the preset or entered data into account.
When routine tests are carried out or in case of unclear diagnosis/error messages during
operation, the system should be reinitialized to enable a better assessment of the controlled
system.
9.1 Diagnosis messages
Hardware error electronics
This message is issued if a defect is detected in the electronics module during cyclic check.
Repair required.
Hardware error mechanics
This message is issued if, during cyclic check, a defect is detected in the mechanics module.
Repair required.
Memory checksum error
This message is issued if the cyclic check determines that a memory block has been modified
without verification.
Static message, remains active until the event is located in the field device.
Measurement error
The internal A/D converter does not function properly within its specified time frame, or the
measured values are not within the physical measuring range limits. In case reset is not suc-
cessful after a warmstart, repair is required.
Static message, remains active until the event is located in the field device.
Device not initialized
The device has not been initialized, or a coldstart was carried out.
Automatic reset after initialization has been successfully completed.
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Messages and diagnosis
Summary of Contents for 3785 series
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