5-4.2. Rs-422/485 Operation - Aeroflex Weinschel 8310 Operation & Service Manual

Model 8310
5-4.2. RS-422/485 Operation: The RS-422/RS-485 Serial mode is useful in applications requiring long cable lengths
(up to 5000 ft at 9600 baud), or in electrically noisy environments. All communication parameters available for the
RS232 port are also available under RS-422 operation (baud rate, handshaking, etc). Full Duplex operation is
supported. The RS-422 port utilizes a 9-pin connector. The pin-out for the connector is show below. For clarity, the
signal names and directions are relative to the 8310.
Pin
1
2
3
4
5
6
7
8
9
Aeroflex / Weinschel
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Signal Name
RxD+
RxD-
TxD-
TxD+
GND
CTS+
RTS-
CTS-
RTS+
RS422
9-pin DB9 Pinout
6
CTS+
7
RTS -
8
CTS -
9
RTS+
Description Direction
Receive data input
Receive data input
Transmit data output
Transmit data output
Ground ---
Clear To Send input
Request To Send output
Clear To Send
Request To Send output
1
RXD+
2
RXD-
3
TXD-
4
TXD+
5
GND
IM-289A
input
18