Veeder-Root Driver Description; Provided By The Supplier Of - FieldServer FS-8700-74 Driver Manual

FS-8700-74 Veeder Root Driver Manual Page 3 of 33
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Veeder-Root Driver Description

The Veeder-Root Serial Driver allows the FieldServer to transfer data to and from devices over
either RS-232 or RS-485 ports using Veeder-Root protocol as defined in Veeder Root
Document 576013-635 Revision J.
The FieldServer emulates a Client.
The Veeder-Root Serial Driver is a poll response driver. Only one query or command can be
processed at a time.
A limited set of the queries and commands defined in the protocol specification have been
implemented. The reason for the limitation is two-fold. Firstly, not all commands/queries will
have any meaning to a downstream device as they are principally defined to configure the
Veeder-Root Device. Secondly some commands return very complex data sets which cannot
be processed in a method suitable for loading into the FieldServer's Data Arrays.
The driver is capable of exposing its communications statistics. This can be useful if you wish
to monitor them using a downstream device. In this way you can ensure that you are using
valid data and can generate alarms if communication problems arise.
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