1
9
2
10
3
11
4
12
5
13
6
14
7
15
8
16
1
9
2
10
3
11
4
12
5
13
6
14
7
15
8
16
1
9
2
10
3
11
4
12
5
13
6
14
7
15
8
16
TX1TX1
TX1TX1
TX1TX1
TX1TX1
TX2TX2
TX2TX2
TX2TX2
TX2TX2
Terminator
220 ohms / 0.5W
Terminator
220 ohms / 0.5W
Max. 247 units can be linkedMax. 247 units can be linked
RS-232RS-232
PCPC
TEC99001
RS-485 to RS-232
network adaptor
RS-485 to RS-232
network adaptor
RS-485RS-485
Twisted-Pair WireTwisted-Pair Wire
Figure 2.18
RS-485 Wiring
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