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18
Building Technologies
048_DMS_DF8000_ICC_MP4.15_A6V10081388_c_en.doc
Fire Safety & Security Products
06.2008
4.4
RS485 bus connection
The CPU module is connected on the 2-wire, RS485 bus as shown in Fig. 9. The
RS485 signals have to be connected to terminals 10 and 11.
Fig. 10 RS485 connection
The RS485 bus cable should be TP AGW20 or equivalent. A 100 Ohm resistor
should be installed at both ends of the line (see Fig. 11).
Fig. 11 Termination resistors
4.5
DF8003 module mechanical dimensions
Width 50
mm
Height 75
mm
Depth 48
mm
Tab.9.
DF8003 CPU mechanical dimensions
10
11
12
13
14
15
16
17
18
9
8
7
6
5
4
3
2
1
1
9003
CPU
1
8
FLT
TX
RX
PWR
RST
10
11
12
13
14
15
16
17
18
9
8
7
6
5
4
3
2
1
1
9003
CPU
1
8
FLT
TX
RX
PWR
RST
from
NK822x
RS485 -
RS485 +
to next DF8003
100 Ohm resistors at
the ends of the RS485
Содержание DF8000
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