Device description RFM - HF RFID Series
Leuze electronic
RFM - HF RFID Series
19
TNT
35/7-2
4
V
Two-wire RS 485
The Leuze
multiNet plus
is optimized for fast transmission of scanner data to a primary
host computer. Physically, it consists of a two-wire RS 485 interface that is controlled by a
software protocol, the Leuze
multiNet plus
protocol. As a result, wiring of the network is
simple and economical, since the network connection is simply looped from one slave to
the next.
For the Leuze
multiNet plus
, a shielded, double-strand cable with twisted strands should
be used. This makes possible a total network length of up to 1200m. The M12 connection
technology simplifies wiring here.
3.6
Leuze multiScan
The multiScan operation mode is based on the Leuze
multiNet plus
and links individual
readings from multiple RFID devices into a single read result. This is used, for example, on
a packet conveyor system on which the transponder can be affixed on the right side, on the
left side or on top, thereby requiring three read stations. So that the host does not need to
process one decoding result and two "No Reads", i.e. three readings for each package, a
multiScan
arrangement is used to ensure that the
multiScan
master passes only one
reading from the three read stations to the host. As a result, the read/write system network
looks like just one RFID device to the host on the outside!
For this purpose, a
multiScan
master and one or more
multiScan
slaves are connected
together via the RS 485 interface. The
multiScan
function on the RS 485 interface is
possible for a minimum of 2 and a maximum of 30 devices.
The protocol set on the RS 485 interface is the
multiNet
protocol. As a result, during
multiScan
operation on the RS 485 interface, the
multiNet
master also becomes a
multiScan
master and the
multiNet
slaves become
multiScan
slaves (all
multiNet
slaves
are, thus, integrated in
multiScan
operation).
