Electrical connection
Leuze electronic GmbH + Co. KG
BCL 300
i
\ BCL 301
i
79
7.4.5 BUS OUT for the BCL 301
i
The RS 485 interface on the BCL 301
i
is looped through to the socket or the BUS OUT terminals to
configure the Leuze multiNet plus network with additional participants.
Termination of the RS 485 interface on the slave
On the last network device, the Leuze multiNet plus network (RS 485 interface) must be terminated via a
terminating resistor network (see chapter 13 "Type overview and accessories") on the BUS OUT socket or
via the activation of the termination via a slide switch in the MK 301 or the MA 100.
7.5
Leuze multiNet plus
The Leuze multiNet plus is optimized for fast transmission of scanner data to a primary host computer. The
multiNet plus consists physically of a two-wire RS 485 interface through which the multiNet plus software
protocol is controlled.
This makes wiring the network easy and inexpensive as slaves are looped through to one another in
parallel.
Figure 7.15: Leuze multiNet plus system topology
BUS OUT RS 485 (5-pin socket, B-coded)
Pin
(M12)
Name
(terminal)
Comment
1
5 V DC for bus termination
2
RS485 B RS 485 B - signal line
3
GND485 Reference ground RS 485 - potential equalization
4
RS485 A RS 485 A - signal line
5
FE
Functional earth / shield
FE via
thread
FE via
screw
fitting
Functional earth (housing)
Table 7.5:
Pin assignment BUS OUT for BCL 301
i
NOTE
Ensure adequate shielding. The entire interconnection cable must be shielded and earthed. The
signal lines must be stranded in pairs.
NOTE
The bus front on the bus master (MA 31 or BCL 500
i
) is automatically terminated.
BUS OUT
VCC485 1
2
3
4
RS485B
RS485A
GND485
FE
5
M12 socket
(B-coded)
MS 301
RS485 A
n.c.
n.c.
GND485
RS485 B
Spring-cage terminals
MK 301
multiNet master
(e.g. BCL 500
i
or MA 31…)
BCL 301
i
slave 1
BCL 301
i
slave 2
BCL 301
i
slave n
to PC/PLC
Terminating resistor on the last slave