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MOUNTING AND CONNECTING
Configuring the Keyboard
Addressing the Clients
Each client in the RS485 BUS must have an individual device address between 00 and
255. An address may only be assigned once within the system. The address setting is
carried out via 8 jumpers on each circuit board according to the following table.
Each client can be addressed by its individual system address and receive control
commands from the KB-485 keyboard.
7
6
5
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
If a jumper is plugged, the information is 0; if a jumper is unplugged the information is 1.
The jumpers have the following values:
jumper
0
jumper
1
jumper
2
jumper
3
jumper
4
jumper
5
jumper
6
jumper
7
The address results from adding up the individual values.
RS485 Termination (Pos. 2)
The terminating resistor (120 Ohm) of the RS485 can be activated via the RS-485
Termination jumper. The terminating resistor of the RS485 has to be activated (jumper
plugged)
for
the
4
3
2
1
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
1
0
0
1
0
0
0
1
0
0
0
1
1
0
0
1
1
0
1
0
0
1
1
1
1
1
1
1
1
value
value
value
value
value
value
value
value
first
and
for
-24-
0
address
0
00
1
01
0
02
1
03
0
04
1
05
0
06
1
07
0
08
.
.
.
0
254
1
255
1
2
4
8
16
32
64
128
the
last
client
in
the
system.
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