Seiwa Si-Tex Vector 3D GPS User Manual
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Vector 3D User Guide
NMEA 2000 Port
By default, Port C is configured as a NMEA 2000 port with the default baud rate of 57600.
To use 3D for NMEA 2000 you have to connect the included serial-to-NMEA 2000 adapter (P/N 676-0026-000#) to the
unit. Figure 2-8 shows the adapter. Insert the 12-pin connector of the adapter into the male end of the 12-pin connector
on the 3D by aligning the keys. You can then attach the adapter to the unit using the supplied screws (machine, 8-32, ½”,
PPHC, SS) and washer (washer, flat, #8, SS). The 5-pin male Micro-C connector connects to your NMEA 2000 drop
cable.
Figure 2-8: Serial-to-NMEA 2000 adapter
NMEA 2000 Standard pinout
Table 2-1 lists the commands used to configure Port C back to serial or NMEA 2000 when necessary. You
can only send these commands using Port A
.
Table 2-1: Commands for changing Port C (must be sent through Port A)
Command
Reply
Description
$JRELAY,PORTC,$JSERIALMODE
$>JSERIALMODE,ENABLED
$>resetting
Switch Port C to
serial
$JRELAY,PORTC,$JN2KMODE
$>JN2KMODE,ENABLED
$>resetting
Switch Port C to
NMEA 2000
Table 2-2 shows the requested PGNs with the 3D in NMEA 2000 mode
.
Table 2-2: Received messages based on a request
PG No.
(PGN)
Description
Level
Default
Update
Rate
(msec)
Freq (Hz)
059392
ISO Acknowledgement
Used to acknowledge the status of certain
requests addressed to a specific ECU.
B
On Request
On Request