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Wiring the Zeus Display | 25
SimNet
SimNet is a data network based on NMEA2000 CAN bus technology that makes
interconnection and integration of B&G and NMEA2000 products simple. SimNet
permits the exchange of data between the interfaced products and enables the flow
of commands and instructions between the various SimNet and NMEA2000 compatible
products. The data transfer capability of SimNet is 50 times higher than the NMEA0183
standard at 4800 baud.
The advanced SimNet Plug & Play (P&P) function provides flexibility and automatic
interface setup to B&G products. Previous models of B&G products that are not SimNet
compatible and non-B&G products also benefit from this P&P setup function.
Certain NMEA0183 data can be converted to and from the SimNet network by;
connecting directly to the NMEA0183 port on an Zeus Display
•
using and optional converter unit such as the AT10
•
connecting to a device that has the built-in capability to convert NMEA0183 to SimNet
•
/ NME2000
Most NMEA2000 devices can be connected directly to a SimNet backbone and SimNet
devices can be connected to a NMEA2000 network by using adapter cables. ( see SimNet
cables list)
SimNet Connector
3
4
5
1
2
Pin Function
1 CAN_H
2 SimNet power (+) 12 V DC
3 SimNet power (-)
4 Shield
5 CAN_L
SimNet is a proprietary data network based on NMEA2000 CAN bus.
•
SimNet is a powered network. It must have a separate 12-15 V DC power supply
•
protected by a 5 Amp fuse. Do not connect the SimNet power cable to the same
terminals as the start batteries, Autopilot Computer, Radar, thruster or other high
current products.
A SimNet network consists of a linear “backbone” from which “drop cables” to SimNet
•
devices connect. Devices that have more than one SimNet connector can be part of a
SimNet backbone (daisy chained) (But not as part of a NMEA2000 backbone).
A drop cable is a SimNet cable that connects a SimNet device to the backbone. A drop
•
cable has a maximum length of 6 m (20 ft).
A SimNet Network
•
has a maximum cable length of 120 m (394 ft), which includes
drop 30 m (98.5 ft) mast cable. Total 150 m (500 ft) max.
A SimNet network, needs to have a terminator at each end of the backbone. A
•
terminator can be one of the following:
a power cable with built in terminator (red cap)
-
a terminator plug (red cap)
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terminated in-line joiner (red locking collars)
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a wind transducer (terminator is in the mast head unit as opposed to mast cable).
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