Earlier versions of NMEA 0183 (before V2.0) used slightly different connection
methods and signals levels. The instruments had just one ‘NMEA’ data line (‘Tx’ or
‘Out’) and used the ground as the other line. It is possible to connect an old type
single‐ended system by connecting the NMEA +/A output from the unit to the ‘Rx/In’
input of the device, and the NMEA ‐/B output from the unit to the ground of the
single‐ended device.
If a four wires cable is being used to connect the NMEA 0183 interface and the power
supply with the signals: NMEA +, NMEA ‐, VCC, GND: you can connect the GND wire
to the GND Power position (see next section) and left the RS485‐GND unconnected.
Connect Dedicated Power
6.4
Identify the RS‐485 and Power connector and connect the wires in the corresponding
Power pins.
7
Configuration:
Make sure you have connected your PC or device to your NMEA Connect Plus Access Point
via Wi‐Fi (see section 5.7 (WIFI‐Access Point) for further details) or the NCP is connected via
Wi‐Fi to your network (see section 7.1).
When connecting to the NCP Access Point, the NCP IP address is the
192.168.4.1
. If it is
connect to your Wi‐Fi network, the IP address will be the one you had configured
previously.
You can now access the NCP configuration page from any web browser. Enter the
IP
address
into the address bar and you will be shown the NCP home page.
2.GND
2.RS458+
2.RS485‐
GND
+12v
1.RS485+
1.RS485‐
1.GND
RS‐485
PORT 2
RS‐485
PORT 1
POWER
