The NMEA4WIFI multiplexer can send and receive wifi data in a "client/server configuration" where the multiplexer is the server and the connecting devices are the clients. You can can use either the UDP, the TCP or both internet protocols to send and receive wifi data. You turn one protocol inactive by setting its port number equal to zero. Non zero port numbers, either UDP or TCP, should be in range from 1024 up to 65535. By default, NMEA4WIFI transmits using UDP broadcasting on port number 2000 (compatible with Navionics Sonar Chart Live). UDP broadcasting assures that all the clients connected to the wifi network listening to the specified UDP port number will receive the packets sent by the multiplexer. You should also set the same protocol (UDP or TCP) and the corresponding port numbers on the connection devices that receive/send data from/to the NMEA4WIFI multiplexer. When you use the TPC protocol, you need to specify the IP address of the multiplexer. This address, in the case of AP ONLY mode, is If the multiplexer is connected to an external network you specify the IP address that is assigned by the external network. It is important to note that only one connection with the multiplexer can be active through the TCP protocol but, at the same time, you can have multiple UDP connections. The wide text boxes for each wifi ports refer to NMEA0183 sentence filtering. If you do not need sentence filtering, you enter 0 (zero) in these boxes. See here for an explanation about sentence filtering. Finally you can set what to do with the received wifi data. It can be be transmitted through the serial output port P5 or through the other internet port.

Table of contents

previous page start next page