Yacht Devices YDNB-07N User manual

User Manual
Yacht Devices NMEA 2000 Bridge YDNB-07
also covers models
YDNB-07N, YDNB-07R
Firmware version
1.42
2022

© 2022 Yacht Devices Ltd. Document YDNB07-005.May 24, 2022. Web: http://www.yachtd.com/
NMEA 2000® is a registered trademark of the National Marine Electronics Association. SeaTalk NG
is a registered trademark of Raymarine UK Limited. Garmin® is a registered trademark of Garmin Ltd.

Contents
Introduction 4
Warranty and Technical Support 6
I. Product Specication 7
II. Installation and Connection to NMEA 2000 or CAN Networks 9
III. LED Signals 11
IV. MicroSD Slot and Card’s Compatibility 12
V. Loading of Programs into the Device 14
VI. Structure and Basic Syntax of the Program 15
VII. Description of the Settings 17
VIII. Programming the Device 21
IX. Optimization and Performance 34
X. Debug and logging functionality 38
XI. Firmware Updates 40
XII. Program protection and encryption 41
Appendix A. Troubleshooting 42
Appendix B. List of NMEA 2000 Messages of the Device 44
Appendix C. Device Connectors 45
Package Contents
Device 1 pc.
This Manual 1 pc.
Stickers for MicroSD slot sealing 6 pc.

— 4 —
Introduction
Yacht Devices NMEA Bridge unies two physical NMEA 2000 networks into a single logical network,
smoothly exchanging messages between them. The Device also allows to organize arbitrary ltering,
processing and routing of any CAN bus messages.
This can accomplish the following tasks:
1. Bypass the physical limits of NMEA 2000 networks concerning length of networks
(100 meters for regular cable and 250 meters for heavy or mid-type cable) and concerning
the maximum number (50) of physical devices attached to the network. On a network with
address capacity of 252, multiple bridges can be engaged to expand to around 250 physical devices.
2. Isolate devices from each other. Using the simple lter, you can block transmission of all
or of selected messages from a given device in a separate subnet.
3. Ensure proper functioning of equipment. Correct the transducer oset of the depth sounder,
or “delete” invalid data in messages from equipment that is only partially operational using
a 2- or 3-line script.
4. To ensure compatibility of equipment from dierent generations. You can create
and send any type of NMEA 2000 message using data from other messages in the network.
5. Diagnose malfunctions in the NMEA 2000 network. The Device can record network
messages and debug data from custom programs on a MicroSD card in a text le. You can view
the data in a standard text editor on a smartphone or tablet with a MicroSD slot, there is no need
for a computer. You can even create and edit programs for the Device right on your phone!
6. Create custom gateways that do not meet NMEA 2000 standards. One of the CAN-interfaces
on the Device has high-voltage galvanic isolation and can operate at a higher supply voltage.
7. Create custom gateways joining two CAN networks with arbitrary protocols. Both 11-bit (CAN
A) and 29-bit (CAN B) frames are supported. One of the network can operate at any baud rate from
50 kbps to 1000 kbps. Though device programming language was not designed for full-edged CAN
applications, one can create, for example, a gateway between CAN-based Propulsion System, Battery
Charger or Servo to NMEA 2000.

— 5 —
8. Create custom NMEA 2000 data procesing device, for example, implement complex digital
switching rules for Yacht Devices NMEA 2000 Digital Switching equipment, such as: delayed and
timed switching, auto-o, conditional switching or trigger warnings on a chartplotter when certain
data values are over the threshold.
Programming the Device requires knowledge of NMEA 2000. Copy of NMEA 2000 standard can be
purchased from the National Marine Electronics Association: http://www.nmea.org.
Yacht Devices would like to note that a NMEA 2000 network might contain important
devices such as a deep sounder, magnetic compass and autopilot. Failure or incorrect
operation of these devices can result in serious accidents and fatalities. When
programming the Device, you must be fully aware of all the implications. Before
making a sea-going trial, conduct mandatory training for the vessel’s crew.

— 6 —
Warranty and Technical Support
1. The Device warranty is valid for two years from the purchase date. If the Device was purchased in a
retail store, when applying under a warranty case, the sale receipt may be requested.
2. The Device warranty is terminated in case this Manual instructions violating, case integrity breach,
repair or modication of the Device without manufacturer’s written permission.
3. If a warranty request is accepted, the defective Device must be sent to the manufacturer.
4. The warranty liabilities include repair and replacement of the goods and do not include the cost
of equipment installation and conguration, as well as shipping the defective Device
to the manufacturer.
5. Manufacturer responsibility in case of any damage as a consequence of the Device operation or
installation is limited to the Device cost.
6. The manufacturer is not responsible for any errors and inaccuracies in guides and instructions
of other companies.
7. The Device requires no maintenance. The Device’s case is non-dismountable.
8. If the event of a failure, please refer to Appendix A. before contacting the technical support.
9. The manufacturer accepts applications under the warranty and provides technical support only
via e-mail or from authorized dealers.
10. Manufacturer contact details and a list of the authorized dealers are published on the website:
http://www.yachtd.com/.

— 7 —
I. Product Specification
Figure 1. Drawing of YDNB-07R model of the Bridge
Our devices are supplied with dierent types of NMEA 2000 connectors. Models with the sux R
at the end of model name are equipped with NMEA 2000 connectors compatible with Raymarine SeaTalk
NG (as at the picture above). Models with the sux N are equipped with NMEA 2000 Micro Male connectors
(see Appendix C).

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Device parameter Value Unit
Power supply voltage, CAN1 interface 9..16 V
Average current consumption, CAN1 38 mA
Load equivalency number, CAN1 1 LEN
Power supply voltage, CAN2 interface 9..30 V
Average current consumption, CAN2 13 mA
Load equivalency number, CAN2 1 LEN
Galvanic isolation electrical strength between CAN1 and CAN2 2500 V
RMS
Reverse polarity protection on both CAN1 and CAN2 interfaces Yes —
Operating temperature range -20..55 °С
Cable length 500 mm
Device’s case length (without connector) CAN1 / CAN2 54/40 mm
Weight without MicroSD card 52 g
Yacht Devices Ltd declares that this product is compliant with the essential requirements of EMC
directive 2004/108/EC.
Dispose of this product in accordance with the WEEE Directive. Do not mix electronic disposal
with domestic or industrial refuse.

— 9 —
II. Installation and Connection to NMEA 2000 or CAN Networks
Never connect both connectors of the Device to the same NMEA 2000 or CAN network.
This can ood the network with innite forwarding of messages and cause a temporary
inoperability of the network.
The Device requires no maintenance. When deciding where to install the Device, choose a dry mounting
location. Avoid places where the Device can be ooded with water; this can damage it.
Device can be directly plugged into to the network backbone connector. YDNG-07N model can also be
connected via standard "DeviceNet NMEA 2000 Micro" drop cable. If you have a CAN bus with a non-
standard physical layer, connect CAN bus rails and power rails according to Device pinout given in
Appendix C. Before connecting the Device, turn o the bus power supply. Refer to the manufacturer’s
documentation if you have any questions regarding the use of connectors:
• SeaTalk NG Reference Manual (81300-1) for Raymarine networks
• Technical Reference for Garmin NMEA 2000 Products (190-00891-00) for Garmin networks
After connecting the Device, close the lock on the connection to ensure water resistance and reliability.
The microcontroller of the Device is powered by the CAN1 interface. The Device will not work until the
CAN1 interface is powered up. If you want to start up the Device for familiarization purposes or you
implement a custom data processing device which does not need to send data between CAN1 and CAN2
interfaces by design, CAN2 interface can be left unconnected.
The Device has a LED which ashes red or green. When Device CAN1 interface is powered, LED will
produce a series of 2 ashes 5 seconds apart. If this does not happen, see Appendix A.

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Figure 2. Typical NMEA 2000 bridging application network layout
Please remember that a NMEA 2000 network requires a separate power supply and two terminators,
on each backbone end. If the Device is used as a bridge, connecting two existing NMEA 2000 network
segments, you have to make sure to add terminators to each backbone segment and power both segments
from a 12V power supply. More information on this topic is available in the above listed documents from
Raymarine and Garmin.