User`s manual

GFK-2334A Chapter 3 PROFIBUS Master CPU Configuration 3-3
3
DPV1 Status
The starting reference address of a 32-bit (2-word) produced range used at the
beginning of a scan to receive the station address of a slave that has a DPV1 message
to send. If another slave has a DPV1 message, it is ignored until the first one has been
serviced, and will then appear in a subsequent scan.
To acknowledge the DPV1 message and obtain the alarm information it contains, use a
DPV1 Alarm Request (task 9) COMMREQ. For details, refer to chapter 5.
The DPV1 Status block must be a non overlapping range in %AI, %I, %Q, %G, %AQ,
%R, %T, or %M. Defaults to %AI memory.
Length
(of DPV1 Alarm Response
Block)
The length for the DPV1 Alarm Response Block is always 2 words (32 bits).
Network Settings
Double-clicking this field opens the Master Properties dialog box. This dialog box is
discussed in “Configuring Network Settings.”
Inputs on Loss of Slave
Determines the values that the master reports for a particular slave if communications
between master and slave are lost. Choices are Hold Last State (default) and Clear.
Slave Status Fault Table
Entries
If set to True (default), slave communications status events (loss and re-establish) are
reported as fault table entries. If set to False, slave status events are not reported to the
fault table.
Download
Names/Descriptions
If set to True, names and descriptions for the slaves and the master are sent to the PLC
and do not revert to default upon uploading. If set to False, the names and descriptions
are not downloaded to the PLC and revert to the default values upon uploading from the
PLC.
Note: Downloading names and descriptions may use too much memory in the PLC. It is recommended that this
parameter remain set to False (Default). Names and descriptions are a convenience only. Omitting them from
the download does not affect system operation.