INSTALLATION – DX8200 SERIAL INTERFACE
17
2
RS485 Full-Duplex
The RS485 full-duplex (5 wires + shield) interface is used for non-polled communication
protocols in point-to-point connections over longer distances (max. 1200 m / 3940 ft) than
those acceptable for RS232 communications or in electrically noisy environments.
The following pins of the Main Interface connectors (Figure B, 4 or 5) are used for RS485
Full-duplex interface connection:
Connector
Name
Function
25-Pin
9-Pin
17
2
TX485+
RS485 transmit data +
5
3
TX485-
RS485 transmit data -
19
5
GNDRS485
RS485 ground reference
18
7
RX485+
RS485 receive data +
6
8
RX485-
RS485 receive data -
DX8200 9-pin Connector
5
GNDRS485
TX485+
2
TX485-
3
RX485+
7
RX485-
8
RX485
TX485
GND
USER INTERFACE
Earth
Ground
Figure 15 - RS485 full-duplex interface connections
Содержание DX8200
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