
INSTALLATION – DX8200 SERIAL INTERFACE
21
2
2.4.4 Auxiliary
Interface
The auxiliary serial interface of the DX8200 is equipped with both RS232 and RS485 half-
duplex interface connections. The signals for the auxiliary interface are available on the
Aux.
Interface
A
and
B
connectors to simplify the master/slave connections (Figure B, 1 and 2).
RS232 Auxiliary
The following pins of the
Aux. Interface B connector
are used:
Connector
Name
Function
B
5
GNDAUX232
auxiliary RS232 ground
6
RXAUX232
auxiliary receive data
7
TXAUX232
auxiliary transmit data
TXD
RXAUX232
RXD
TXAUX232
7
5
GNDAUX232
GND
DX8200
USER INTERFACE
6
Earth
Ground
Figure 20 - RS232 Auxiliary interface connections
RS485 Half-Duplex Auxiliary
The following pins of the
Aux. Interface A and B connectors
(Figure B, 1 and 2) are used:
Connector
Name
Function
A and B
1
GND485
ground
8
transmit/r
9
RTX485-
transmit/receive -
DX8200
USER INTERFACE
9
RTX485-
8
1
GND485
GND485
RTX485-
Figure 21 - RS485 Auxiliary interface connections