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Verfügbare Sprachen
Verfügbare Sprachen
7. Functional description
7.1 Block diagram
PWR
LED
0V
Line
switch
S1:4
Line
0V
S1:7
0V
Power Supply
F1
7.2 RS-422/485 connection
4-wire
Twisted pair
TD-29
9
A'
Receiver
8
B'
7
A
Transmitter
6
B
NC
5
6611-2001
Amplifier S1:6
RD
LED
FSK
Demodulator
Isolated
Power Supply
RS-422
equipment
A
Transmitter
B
A'
Receiver
B'
D-Sub
RD TD SG
DSR
RTS
2
3
5
6
0V
5V
TD LED
DCD
LED
MCU
+5V
0V
–5V
2-wire
TD-29
Transmitter/
Receiver
NC
Screw terminal
CTS
CTS
RTS TD RD SG B
7
8
1
2
3
4
0V
S2:4
5V
S2:3
RTS LED
0V
S2:2
5V
CTS LED
S2:1
0V
Twisted pair
7
A/A'
A/A'
6
B/B'
B/B'
5
A B' A'
5
6
7
8
9
RS-485
equipment
Transmitter/
Receiver
GB.27
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