Leuze electronic
Connector Unit MA 30 / MA 31
9
Leuze
electronic
Device Description
2.5
MA 30/31 as network master
Master operation
The MA 30/31 is designed specially for master operation within a network. It
manages slave data in the multiNet plus and establishes the connection to
the primary host computer. Only a few parameters need to be set for master
operation (see chapter 4 "Commissioning"). Network commissioning can
thus be performed in very little time.
Last slave address
The switch for network address setting has an important function. Unlike the
slaves, the MA 30/31 address switch is
not
used to set the network address
(the master always has the address
Addr.00
), but rather the
last slave
address
, i.e. the number of the highest-value slave.
Thus, the MA 30/31 can be "informed" how many slaves are operating on the
network without having to call up the software setup. If the network is expand-
ed at a later time, only the address switch needs to be appropriately adjusted.
Time out
During the initialisation phase, i.e. after switching on the operating voltage,
the master looks for the number of selected slaves. If a slave is not found or
does not respond, the master generates a "
time out
" at this address
(response-time time out). At the host interface, the slave address and a
"T"
are output. For example, "
08T
" means that no slave has responded at net-
work address 08.
The network remains operational after one or more time outs, but a slave for
which a time out has been reported cannot be accessed.
Where to mount the
MA 30/31
When mounting the MA 30/31, make sure that it is in an easily accessible,
clearly visible location in your system. Once the network has been put into
operation, it is possible to set (parameterise) each scanner in the network
centrally via the service or primary interface of the MA 30/31 without having
to connect a PC/terminal to the individual read stations.
