Functional description, Wire – Westermo TD-29P User Manual
Page 13
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GB.27
6611-2022
7. Functional description
7.1 Block diagram
7.2 RS-485 connection
Amplifier S1:6
S1:7
RD
LED
DCD
LED
B
A
Screw terminal
1
2
3
4
5
6
7
8
0V
F1
0V
+5V
–5V
0V
S2:4
S2:3
5V
0V
9
TD
LED
MCU
1–5, 7–9 not used
FSK
Demodulator
Isolated
Power Supply
S1:4
0V
0V
PWR
LED
Line
switch
Line
Power Supply
2-wire
7
6
A/A’
B/B’
B/B’
A/A’
Twisted pair
TD-29P
RS-485
equipment
Transmitter/
Receiver
Transmitter/
Receiver
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