Rs-485 - Brainchild BTC-2500 User Manual

2 15 RS-485

2 15 RS-485
1 2 3 4 5
8 9 10 11
TX1
Twisted-Pair Wire Twisted-Pair Wire
1 2 3 4 5
8 9 10 11
TX1
Max. 247 units can be linked Max. 247 units can be linked
1 2 3 4 5
8 9 10 11 12 13 14
TX1
36
6 7
12 13 14
TX2
RS-485
6 7
12 13 14
TX2
6 7
TX2
Terminator Terminator
220 ohms / 0.5W 220 ohms / 0.5W
RS-485 to RS-232 RS-485 to RS-232
network adaptor network adaptor
SNA10A or SNA10A or
SNA10B SNA10B
TX1
TX2
UM25001C
Figure 2.18 Figure 2.18
RS-485 Wiring RS-485 Wiring
RS-232
PC