700-SDI-RADAR-300WL-Man Rev 2 11 Apr Mar 2022
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Part# 21371
2.9
CABLE PIN-OUT AND WIRING
The sensor is supplied with an open-end cable consisting of 12 wires coded as shown in Table 2-2.
Users can attach their own connector, connect the cable via a terminal strip, or wire it directly to
device electronics. Refer to Table 2-2 for wiring details.
Table 2-1:
Cable wiring codes
PIN # COLOUR
PIN NAME
PIN DESCRIPTION
1
White
GND
This pin should be connected to the ground (negative) pole of
the power supply
2
Brown
+Vin
Power supply. Power supply voltage must be 9 to 22 VDC,
and the power supply must be able to provide at least 0.65W.
3
Green
RS232 – TxD
RS-232 data transmit signal.
4
Yellow
RS232 – RxD
RS-232 data receive signal.
5
Grey
GND
Signal ground.
6
Pink
CAN – H
CAN2.0B high signal (optional)
7
Blue
CAN – L
CAN2.0B low signal (optional)
8
Red
SDI-12 Data
SDI-12 Data line
9
Orange
RS485 – D-
RS-485 data transmitter/receiver low signal.
10
Dark Red
RS485 – D+
RS-485 data transmitter/receiver high signal.
11
Black
Alarm1 SW or
4-20mA secondary
(optional)
Alarm 1 – open collector switch signal max. 60mA
12
Purple
4-20 mA
Sink for 4-10 mA analog interface. Connect sensing device as
pull-up to sink the current
2.10
SERIAL RS-232 INTERFACE
Serial RS-232 interface is implemented as standard PC full-duplex serial interface with voltage levels
adequate for direct connection to PC computer or other embedded device used for serial RS-232
communication.
When the RS-232 interface is connected to a standard DB-9 PC connector, the TxD line (green wire) is
connected to pin 2 and the RxD (yellow wire) is connected to pin 3. In order for the serial interface to
operate properly, an additional connection of the signal GND (grey wire) is needed on pin 5 of the
DB-9 connector.
