Can Bus (Nmea2000 Connector) - Suzuki SMD12 Installation Manual

2. WIRING
2.7

CAN bus (NMEA2000 Connector)

Every Multi-Function Display has one CAN bus connector (micro style connector). All
Multi-Function Display must be connected to the same CAN bus backbone. To con-
nect the Multi-Function Display and DRS (radar sensor), use "Ethernet Bridging" to
link the DRS CAN bus and the Multi-Function Display CAN bus data (see section 2.4).
To power the Multi-Function Display from the CAN bus port, the MULTI cable must be
supplied with a 15 VDC power input.
What is CAN bus?
CAN bus is a communication protocol (NMEA2000 compliant) that shares multiple
data and signals through a single backbone cable. You can simply connect any CAN
bus devices onto the backbone cable to expand your network on-board. With CAN
bus, IDs are assigned to all the devices in the network, and the status of each sensor
in the network can be detected. All the CAN bus devices can be incorporated into the
NMEA2000 network.
2.7.1 How to connect the SMD12/SMD16 to CAN bus equipment
Below is an example of two SMD units, connected via CAN bus to CAN bus sensors.
Ethernet cable Ethernet cable
2.7.2 NMEA0183 equipment data input
Note: To output NMEA0183 data, see paragraph 2.3.2.
To connect NMEA0183 equipment to Multi-Function Display, use the CAN bus net-
work via the optional NMEA data converter IF-NMEA2K2. This NMEA connection can
accept a baud rate of 4800 or 38400.
Heading input to Multi-Function Display allows functions such as Radar Overlay and
course stabilization (North up, Course up, etc.) in the radar operating modes. The
NMEA0183 heading refresh rate needs to be 100 ms in order for any radar function to
work properly. NMEA0183 heading can be accepted on any CAN bus port at a baud
rate up to 38400 bps. In other words, data sent (IF-NMEA) and received (Multi-Func-
tion Display) must use the same baud rate for each individual data port.
Note 1: When using the ARPA function, set the heading refresh rate to 100 ms.
Note 2: For more information on connecting and wiring IF-NMEA2K2, refer to their re-
spective installation manuals.
2-8
SMD12 SMD12
or or
CAN bus cable CAN bus cable
SMD16 SMD16
to CAN bus sensors to CAN bus sensors