J2K100 User’s Manual
Page B6 Appendix B – Application Note Revision 1.1
J2K100 gateway, which can be done using NMEA 2000
®
cable and connectors. Figure 5
shows how to build a J1939 network using Maretron NMEA 2000
®
cable and connectors.
Figure 5 – Single Engine/Genset, No J1939 Network Installation Diagram
Although not required, this example mostly uses NMEA 2000
®
cable and connectors for the
J1939 network. This is convenient because the network components are readily available and
easily plugged together. Notice that there is no powertap in the J1939 network and this is
because the J1939 engine/genset and J2K100 receive their power independent of the J1939
network. An alternative to building the J1939 network with NMEA 2000
®
approved cabling is to
use SAE recommended cabling and connectors (see Section 3.1).
For illustration purposes, the J1939 network in Figure 5 shows the engine drop or stub (i.e.,
connection between engine/genset and the Maretron tee) as a two wire or twisted pair cable.
The network wiring actually requires three wires: two CAN bus signals (usually designated
CAN-H and CAN-L, usually yellow and green respectively), and a ground used as a reference
(usually designated as CAN-SHLD). Refer to SAE J1939-11 and J1939-15 for recommended
practices in connecting CAN-H, CAN-L, and CAN-SHLD.
After completing the physical connections, you will need to configure the J2K100 so it
responds to the appropriate J1939 address. Most single engine installs have the J1939
address set to 0, but not always, so check with the engine manufacturer and use a Maretron
NMEA 2000
®
display (DSM200/DSM250) to program the J2K100 with the corresponding
J1939
Engine or
Genset
Maretron Micro Double
Ended Cordsets
(MDND22A-M0x0)
Maretron Micro
Female Terminator
(MDND150)
Maretron Micro
Male Terminator
(MDND100)
Maretron
Micro Tee
(MMICT555)
Maretron J1939 to
NMEA 2000
®
Gateway (J2K100)
J1939 Network
NMEA 2000
Network
Maretron Display
(DSM200/DSM250)
Maretron Micro Male Field
Attachable Connector
(M8A5006-32DN)
User Supplied Cable/Connector
Compatible with Engine/Genset
Manufacturer Cabling System
Maretron Micro
Powertap Tee
(M82516-M0x0)
(23 páginas)
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