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User Manual
NMEA2000 / MQTT
Document code: MN67949_ENG Revision 1.000 Page 17 of 32
Figure 3b: “Set Communication
NMEA2000”
window
Figure 3c: “Set Communication
MQTT” window
NMEA
2000:
This section is used to define the main parameters of NMEA2000 line. The means of
the fields are:
In the field “
Baud Rate
” the data rate of the NMEA 2000 is defined;
In the field “
TimeOut
” the timeout of the data is defined. If this time is
elapsed the value of the data of the NMEA 2000 frame become “0xFF” if the
“Cancel Data” field is checked in the “Receive NMEA 2000” window;
If the field “
Enable Peer to Peer
” is checked, the Source Address of the
PGNs received by the converter is masked (only if a single NMEA device is
connected).
MQTT:
This section is used to define the main parameters of MQTT line. The means of the
fields are:
In the field “
Server URL
” the URL or the IP Address of the MQTT Server is
defined;
In the field “
Server Port
” the port used for MQTT communication is defined;
In the field “
Client ID
” the Client ID of the converter is defined (if ned);
In the field “
Keep Alive (seconds)
” the delay with which the Keep Alive
message is sent on MQTT is defined;
If the field “
Clean Session
” is checked, the last MQTT messages are deleted
by the Server and the Client in case of missing ACK. If unchecked, the
Server and the Client hold the last MQTT messages and, in case of incorrect
disconnection or missing ACK, they try to send again them since all the ACK
messages are exchanged correctly (valid only for QoS 1 and QoS 2);
If the field “
Will Flag
” is checked, the converter will publish the Will topic at
the connection to the Server. With this feature, in case of incorrect
disconnection, the Server will publish this topic to all the MQTT Clients that
subscribed it;
In the field “
Topic Name Will
” the topic used for Will message is defined;
In the field “
Message Will
” the payload of the Will message is defined;
