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8.1.3
NK822x (RS485) connection to DF8003
Building Technologies
Fire Safety & Security Products
The cable that links the NK822x to the (first) DF8003 CPU module must be as
shown in Fig. 27.
2
AWG 22 (0.6 mm
) unshielded cable is recommended. Max length is 1200 m.
-
+
2 1
Fig. 27
RS485 Connection cable from NK822x to DF8003
Max distance from NK822x to
last DF8003 = 1200 m
18
17
15
14
13
12
16
1
8
FLT
TX
RX
PWR
RST
1
1
2
3
4
5
6
7
048_DMS_DF8000_ICC_MP4.15_A6V10081388_c_en.doc
to next DF8003 unit
11
10
DF8003
CPU
8
9
31
06.2008
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