Introduction; Firmware Revision; Nbe100 Features - Maretron NBE100 User Manual

NBE100 User's Manual_____________________________________

1 Introduction

Congratulations on your purchase of the Maretron Network Bus Extender. Maretron has
designed and built your NBE100 to the highest standards for years of dependable and accurate
service.
Maretron's NBE100 (Network Bus Extender) allows you to extend the maximum node count,
network trunk length and cumulative drop length of any NMEA 2000
solves bus errors and other electrical issues caused by exceeding any of these limitations and
makes design of large networks easier. NMEA 2000
allowed on a single network, a maximum network trunk length of 200m and a maximum
cumulative drop length of 78m. If you have a network that exceeds any of these specifications,
you can simply disconnect the network trunk in the middle and connect the ends to the
NBE100, along with additional termination resistors. This will split the network into two
electrical segments, each of which can have up to 50 nodes, for a total of 100 nodes on the
logical network. The NBE100 will transparently route NMEA 2000
network segments, making them work as a single logical NMEA 2000
priority-based message routing ensures that higher-priority messages are always prioritized
over lower-priority messages, enabling predictable and reliable network operation. For
exceptionally large networks, multiple NBE100's may be used. Enable NBE100's PGN Filtering
Mode to pass only the PGNs you desire.

1.1 Firmware Revision

This manual corresponds to NBE100 firmware revision 2.3.1.2

1.2 NBE100 Features

The Maretron NBE100 has the following features.
• Segments a single large NMEA 2000
• Allows you to exceed the 50 node limitation on a NMEA 2000
• Allows you to exceed the 200m trunk length limitation on a NMEA 2000
• Allows you to exceed the 78m cumulative drop length limitation on a NMEA 2000
networks.
• Allows all NMEA 2000® devices to operate as if they were still on a single NMEA 2000
network.
• Priority-based message routing ensures higher-priority messages get through the bus
extender first.
• Optically isolates network segments, increasing signal integrity and network reliability.
• Features one user configurable PGN (Parameter Group Number) "Pass filter" per
NMEA200® Interface where 32 PGNs per interface can be forwarded from one
NMEA2000® Interface to the other.
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networks have a maximum of 50 nodes
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network into two smaller electrical segments.
NBE100 User's Manual Rev.1.2
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network. The NBE100
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messages between the two
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network. Advanced
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network.
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network.
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