User's Manual

Spread Spectrum Wireless Data Transceiver User Manual
LUM0002AF Rev E Version 6.3 55
RS-422 and RS-485 Full Duplex Pin-Outs
Function Bare Board Pin Number DB-9 Pin Number
RX+ 7 3
RX- 9 7
TX+ 5 2
TX- 10 8
Signal Ground 4 or 6 5
RS-485 HALF DUPLEX PIN-OUTS
Function Bare Board Pin Number DB-9 Pin Number
Wire to both pins for Bus + Short 5 and 7 Short 2 and 3
Wire to both pins for Bus - Short 9 and 10 Short 7 and 8
Signal Ground 4 or 6 5
RS-422 AND RS-485 FULL DUPLEX PIN-OUTS WATERPROOF ENCLOSURE
Function Bare Board Pin Number Color
RX+ 3 Orange
RX- 7 Violet
TX+ 2 Red
TX- 8 Gray
Signal Ground 5 Green
RS-485 HALF DUPLEX PIN-OUTS
Function Bare Board Pin Number
Bus + 2 and 3
Bus - 7 and 8
Signal Ground 5
RS232 Pin Assignments
Pin Assignment Signal Definition
1 CD Carrier Detect Output Used to show an RF connection between transceivers.
2 TX Transmit Data Output
Used to transmit data bits serially from the transceivers to the
system device.
3 RX Receive Data Input
Used to receive data bits serially from the system device connected
to the transceivers.
4 DTR
Data Terminal
Ready
Input
Used only in transceivers in Point-to-Point Slave/Master switchable
mode or for DTR Connect.
5 GND Ground Signal return for all signal lines shared with Pin 9.
6 DSR
Data Set
Ready
Output
Always high when the radio is powered from the 2.5mm power
connector. Indicated power is on to the radio. Also, this pin can be
used for +12Volts when powering the transceivers directly through
the RS-232 port. Note: This is not used on the OEM module.
7 RTS
Request to
Send
Input
The transceiver does not recognize RTS for flow control. RTS is
used as a control line in RTS/CTS mode.
8 CTS Clear to Send Output
This signal is used to tell the system device connected to the
transceiver that the transceiver is ready to receive data. When
asserted, the transceiver will accept data, when deasserted the
transceiver will not accept data. This should always be used for data
rates above 38.4KB or a risk of lost data may occur if an RF link is
not very robust.
9 GND Ground Signal return for all signal lines shared with Pin 5.