MVI56-PDPMV1 ♦ ControlLogix Platform
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PROFIBUS DPV1 Master
User Manual
Page 163 of 251
ProSoft Technology, Inc.
Slave Address
Station address of the slave that issued the alarm.
Slot Number
Used by the slave to indicate the source of the alarm. Range 0 to 254.
Seq Number
Unique identification number of the alarm. Range 0 to 31.
Alarm Spec Ack
Provides additional information about the alarm, such as if an error appears or
disappears. Also indicates whether the slave needs additional knowledge from
the Master. For example: writing to a certain memory area with an Acyclic Write
request.
Alarm Type
Identifies the alarm type such as Process Alarm, Plug Alarm, and so on. Range 1
to 6, 32 to 126.
Extended Diagnostic Flag
FFh:
Slave sends an alarm message with "Extended Diag flag" set
00h:
Slave sends an alarm message with "Extended Diag flag" cleared
Data [1 … n]
Additional manufacturer-specific alarm information (Alarm - PDU)
Fault Information
If the Message Information word in the header of the message indicates "Invalid
Other", addition information is available in this register.
3E00h:
Module has received an invalid alarm indication data structure from a
DPV1 slave ("Slave Address" contains the node address of the slave that issued
the erroneous indication).
Refer to the PNO document "Extensions to EN50170 (DPV)" for more
information on how to interpret these parameters.
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