
J2K100 User’s Manual
Page 6 Revision 1.2
for the port engine and engine instance one (1) for the starboard engine. By default, the
J2K100 uses engine instance zero (0). If you are installing the J2K100 on a single engine
vessel, then you don’t have to configure this parameter. However, if you install two J2K100s
for dual engine vessels, then you will need to configure the starboard engine J2K100 to use
engine instance one (1). You configure the J2K100 using a Maretron DSM200 or DSM250
display or other NMEA 2000
®
display unit that is capable of configuring the J2K100. Please
refer to the Maretron DSM200 User’s Manual or DSM250 User’s Manual, as appropriate, for
details.
2.5.3 NMEA 2000
®
Transmission Instance Selection
NMEA 2000
®
provides a unique transmission instance for each transmission on a vessel.
Single transmission vessels use transmission instance zero (0) while dual transmission
vessels use transmission instance zero (0) for the port transmission and transmission instance
one (1) for the starboard transmission. By default the J2K100 uses transmission instance zero
(0). If you are installing the J2K100 on a single transmission vessel, then you don’t have to
configure this parameter. However, if you install two J2K100s for dual transmission vessels,
then you will need to configure the starboard transmission J2K100 to use transmission
instance one (1). You configure the J2K100 using a Maretron DSM200 or DSM250 display or
other NMEA 2000
®
display unit that is capable of configuring the J2K100. Please refer to the
Maretron DSM200 User’s Manual or DSM250 User’s Manual, as appropriate, for details.
2.5.4 J1939 Diagnostic Messages Enable/Disable
The J2K100 is capable of re-broadcasting J1939 diagnostic messages output by the monitored
engine, transmission, or genset onto the NMEA 2000
®
network. As shipped from the factory,
the J2K100 does not transmit J1939 diagnostic messages over the NMEA 2000
®
network. If
this behavior is desired, it may be enabled with the Maretron DSM200 or DSM250 display or
other NMEA 2000
®
display unit that is capable of configuring the J2K100. Please refer to the
Maretron DSM200 User’s Manual or DSM250 User’s Manual, as appropriate, for details.
2.5.5 NMEA 2000
®
PGN Enable/Disable
The J2K100 is capable of transmitting several different kinds of NMEA 2000
®
messages (or
PGNs) associated with engines, transmissions, and gensets. The J2K100 automatically
detects incoming messages from the J1939 network and translates them into corresponding
NMEA 2000
®
PGNs. For example, if the J2K100 receives engine-related messages from the
J1939 network but no transmission or genset messages, then the J2K100 will generate the
corresponding NMEA 2000
®
engine PGNs, but it will not transmit any NMEA 2000
®
transmission or genset messages. As another example, let’s say that there is an engine and a
genset connected to the J1939 network, yet we are only interested in having the engine
messages translated to corresponding NMEA 2000
®
PGNs. In this case, the J2K100 can be
configured to enable engine PGNs while disabling genset PGNs. You can configure the
J2K100 using a Maretron DSM200 or DSM250 display or other NMEA 2000
®
display unit that
is capable of configuring the J2K100. Please refer to the Maretron DSM200 User’s Manual or
DSM250 User’s Manual, as appropriate, for details.
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