Drive Alarms Handling - GE Profibus - DP Bus Instructions Manual

Profibus-DP Bus
6. DRIVE ALAkMS HANDLING
The drive reports automatically its status to the Profibus-DP interface card, if an alarm condition occurs.
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When the communication is established, the drive status is sent to the Master in at the moment in which the drive
initialization has terminated.
Every time the Drive Status field of the Monitor structure in the Dual-Port-Ram changes its status, the Profibus-
DP interface card sends the updated drive status to the Master by means of a diagnostic message (please refer to
"Draft Standard DIN 19245 Part 3" sect. 8.3.1).
The information are contained in the 'User Specific Diagnostic Data' field of the diagnostic message.
This field is made up of three Bytes. The first contains the 'User Specific Diagnostic Data Lenght (in bytes)' and is set
to three. The second and the third contains the code of the drive status (for the code please refer to the drive manual).
When a drive alarm occurs, also the 'Ext-Diag' bit in the first Byte of the 'Diagnostic Data' is set to 1.
DRIVE ALARMS HANDLING