Data Communication - Brainchild C21 User Manual

2-9 Data Communication

2-9 Data Communication
C21 C91
12
TX1
13
TX2
Twisted-Pair Wire Twisted-Pair Wire
C21 C91
12
TX1
13
TX2
C21 C91
12
TX1
13
TX2
Figure 2.21 RS-485 Wiring Figure 2.21 RS-485 Wiring
31
TX1
2
TX2
1
TX1
2
1
TX2
Max. 247 units can be linked Max. 247 units can be linked
TX1
2
TX2
1
Terminator Terminator
220 ohms / 0.5W 220 ohms / 0.5W
UM0C911B
RS-485 to RS-232 RS-485 to RS-232
network adaptor network adaptor
SNA10A or SNA10A or
SNA10B SNA10B
TX1
TX2
RS-232
PC