Yacht Devices YDEN-02 Series, User Manual

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UDP is a connectionless protocol; any number of clients can listen to data broadcasted
from a specified port without any additional load on the server and without increasing
the actual network traffic. We recommend using UDP protocol where possible, because
the resources of the Device’s CPU are limited.
The Gateway supports NMEA 2000 (RAW) and NMEA 0183 data protocols.
The Gateway contains a bi-directional converter between NMEA 0183
and NMEA 2000 (see Appendix C) and has a flexible system of message filters
(see Section IV.3). The NMEA 2000 (RAW) protocol is supported in Expedition 10
and CAN Log Viewer (see Section VII.2). The RAW protocol is very simple, open
and supported by our other gateways and routers (see the Appendix E of NMEA 2000
Wi-Fi Gateway YDWG-02 manual for technical details).
On the «NMEA Server» page you can set up to three server ports (see Figure 2).
If TCP network protocol is selected, up to three connections (from three different
applications on one device, or from three devices with one marine application running
on each) are allowed at the same time. So three servers allow nine connections
in total.
In the case of using UDP protocol, the number of devices or applications used
on the data port is not limited. We recommend using UDP protocol when possible.
Servers can be configured as bi-direction, read-only («From NMEA 2000»)
or write-only («To NMEA 2000»). We recommend configuring data ports
as read-only if possible, to prevent network flooding from incorrectly configured
applications.
Server #1 serves Web Gauges (see Section VIII) in addition to connected clients;
Web Gauges will not work when this server is configured to NMEA 2000 protocol
or turned off.
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