General description
DeLaval voluntary milking system VMS
94897201.pdf2007-12-18
ALCOM bus
Ethernet
ALPRO WE
Integration with ALPRO WE
VMS make use of the ALPRO WE
processor to enable communication with, for
example, feeding stations and activity
meters. The ALPRO WE unit uses the
ALCOM bus for communication between the
processor and the sub-units. The processor
is connected to the PC via Ethernet cable,
through which it synchronises data.
Ethernet is a widely used standard for
building computer networks that cover
smaller areas such as a barn or an office
building.
For information about how to install and
work with ALPRO WE, see separate memo
book, article number 94847401.
Error detection and remote
accessing
An all around the clock, all-the-year-round,
automatically operated system creates
numerous demands, not only in terms of
maintenance and service, but also in terms
of safety and reliability. The VMS system
has a number of features to fulfill these
demands.
One of these features is the ability to issue
alarms. Alarms can be of different severity.
Some are issued to draw the attention of
the operator to make him or her aware of a
deviation in normal operating procedures,
but leave the system operating. Others
might pose a safety hazard to personnel or
animals and therefore halt the operation of
the system immediately.
Alarms can be related to animal behaviour,
for example a cow that refuses to leave the
station, or to technical errors. In most cases,
the system initiates a number of self-tests in
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