Simrad ITI TRAWL SYSTEM - SERIAL DATA COMMUNICATION REV... User manual

Simrad ITI Trawl System
Serial data communication and
NMEA 0183 message description
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Instruction manual

Simrad ITI Trawl system
Serial data communication and
NMEA 0183 message description
Instruction manual
857--164777 / Rev.A

Note
Simrad AS makes every effort to ensure that the information contained within this
document is correct. However, our equipment is continuously being improved and
updated, so we cannot assume liability for any errors which may occur.
Warning
The equipment to which this manual applies must only be used for the purpose for which
it was designed. Improper use or maintenance may cause damage to the equipment or
injury to personnel. The user must be familiar with the contents of the appropriate manuals
before attempting to operate or work on the equipment.
Simrad AS disclaims any responsibility for damage or injury caused by improper
installation, use or maintenance of the equipment.
Copyright
E2003 Simrad AS
ISBN 82-8066-013-5
The information contained within this document remains the sole property of Simrad AS.
No part of this document may be copied or reproduced in any form or by any means, and
the information contained within is not to be communicated to a third party, without the
prior written consent of Simrad AS.
Support
For support on your Simrad equipment, consult your local dealer, visit www.simrad.com,
or contact us directly at [email protected].
Simrad AS
Strandpromenaden 50
Box 111
N-3191 Horten
Telephone: [phone]
Facsimile: [phone]
A L W A Y S A T T H E F O R E F R O N T O F T E C H N O L O G Y

Instruction manual
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Sections
This book is the Instruction manual manual for the ITI system.
1INTRODUCTION
2ITI TRAWL SYSTEM, BASIC PRINCIPLE
3ITI GEOMETRY FOR TWIN RIG
4 RESPONSIBILITY
5 SERIAL LINES
6 NMEA 0183 MESSAGES, DEFINITIONS
7NMEA–
ABBREVIATIONS, ITI AUX MENU SELECTIONS
(Cd6911)
M/S simrad Echo, our research and demonstration vessel

Simrad ITI
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Remarks
References
Further information about the ITI system supplied may be found in the following manuals:
•ITI Installation manual
•ITI Trawl Eye Instruction manual

Instruction manual
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Contents
1INTRODUCTION 1..........................................
2 ITI TRAWL SYSTEM, BASIC PRINCIPLE 2................
3ITIGEOMETRYFORTWINRIG 3..........................
4 RESPONSIBILITY 5........................................
5 SERIAL LINES 6............................................
Transmitted messages 6..........................................
Received message 8.............................................
Serial line configuration and pin allocations 9.........................
Serial port pin assignments 10......................................
6 NMEA 0183 MESSAGES, DEFINITIONS 11.................
Message description 11............................................
NMEA output from ITI 12.........................................
NMEA Input to ITI 23.............................................
Telegram from Winch Syncro 2020 25...........................
7 NMEA – ABBREVIATIONS, ITI AUX MENU SELECTIONS 26

Simrad ITI
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Document logistics
Rev Date Written Checked Approved
A23.09.03 GM KRA KRA
B
C
D
(The original signatures are recorded in the company’s logistic database.)
Rev Comments
AOriginal issue.
B
C
D
To assist us in making improvements to the product and to this manual, we would welcome
comments and constructive criticism. Please send all such - in writing or by e-mail - to:
Simrad AS
Documentation Department
P.O.Box 111
N-3191 Horten
Norway
or e-mail:
[e-mail]

Instruction manual
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1INTRODUCTION
Note This document is intended for software engeneers. It is to be used
for writing codes in order to communicate with the ITI system.
With the rapid development of marine electronic devices, it has
become necessary to develop a standardised interface protocol for
exchanging data between devices regardless of the device
manufacturer. The NMEA 0183 standard protocol for interfacing
electronic marine deviceshas been implemented in the ITIsystem.
The most common way of connecting electronic equipment is to
use serial lines.
A more powerful way of integrating, is the Ethernet standard with
higher signalling capacity. The software required to communicate
over the Ethernet is included in the ITI system, however a standard
ITI does not include the hardware required.
A dedicated interface/display board containing the Ethernet
hardware must be installed.
→Please refer to the Simrad ITI Installation Manual, Appendix 1
page 3 – 17 for more details.
The ITI system has four serial lines available for external
equipment connection.
→Please refer to page 6 for more details.

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2 ITI TRAWL SYSTEM, BASIC PRINCIPLE
The Simrad ITI wireless trawl positioning and monitoring system
is designedto improvecontrol andefficiency inpelagic andbottom
trawling. Small robust battery powered sensors mounted on the
trawl, transmit important information to the vessel on request.
•The ITI provides the skipper with exact position of the gear and
what is happening in and around the trawl. It also provides all
crucial information for an effective, profitable and responsible
fishing.
•The ITI is a modular system. From a basic unit of one sensor,
the ITI system can be extended to a complete and advanced
instrument package according to the customers requirements.
Distance and
Speed sensor
Trawl Eye
Depth and
Temperature Sensor
Catch Sensor
Simrad’sphilosophy isto reduce integration costsand increase the
benefit of our products to let data from the ITI be available for
integration with external equipment like chart plotters, winch
control systems etc.