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User Manual
NMEA2000 / Modbus TCP Slave
Document code: MN67225_ENG Revision 1.100 Page 20 of 30
DEFINE NMEA 2000:
By pressing the “
Define COB
” button near “Receive NMEA 2000” from the main window for SW67225 (Fig. 2) the window “Define Modbus
Registers for Receive NMEA 2000 Frames” appears (Fig. 5):
In the field “
List of Receive CAN Frames
” there is
the list of NMEA 2000 frames that you inserted in
“Receive NMEA 2000” Section
In the field “
List of Modbus Registers
” there are
the Modbus words.
In the field “
Create/Modify a Modbus Register
”
you can define the index of the Modbus register and
the bytes of the can frame that you map in.
For example:
Click on the frame, insert the valid address in the field “Index of
Modbus Register”, select the byte position (Byte 1 in High
Modbus byte and Byte 3 in Low Modbus byte), click the “Create”
button, in the field “List of Modbus Registers” appears the new
Modbus register created with the data that it contains.
Figure 5: “Define NMEA 2000” window