Related Manuals for Simrad ITI TRAWL SYSTEM - SERIAL DATA COMMUNICATION REV A
Summary of Contents for Simrad ITI TRAWL SYSTEM - SERIAL DATA COMMUNICATION REV A
- Page 1 Instruction manual Simrad ITI Trawl System Serial data communication and NMEA 0183 message description 11111010001010101010 01010100100010100011 01010101000101010100 10101001100001111....
- Page 3 Simrad ITI Trawl system Serial data communication and NMEA 0183 message description Instruction manual 857- -164777 / Rev.A...
- Page 4 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.
- Page 5 This book is the Instruction manual manual for the ITI system. INTRODUCTION TRAWL SYSTEM, BASIC PRINCIPLE GEOMETRY FOR TWIN RIG RESPONSIBILITY SERIAL LINES NMEA 0183 MESSAGES, DEFINITIONS NMEA – ABBREVIATIONS, ITI AUX MENU SELECTIONS (Cd6911) M/S simrad Echo, our research and demonstration vessel 857-164777 / A...
- Page 6 Simrad ITI Remarks References Further information about the ITI system supplied may be found in the following manuals: • ITI Installation manual • ITI Trawl Eye Instruction manual 857-164777 / A...
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Page 7: Table Of Contents
Instruction manual Contents INTRODUCTION ......... . ITI TRAWL SYSTEM, BASIC PRINCIPLE . - Page 8 Simrad ITI Document logistics Date Written Checked Approved 23.09.03 (The original signatures are recorded in the company’s logistic database.) Comments Original issue. 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:...
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Page 9: Introduction
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. -
Page 10: Iti Trawl System, Basic Principle
Catch Sensor Distance and Speed sensor Simrad’s philosophy is to reduce integration costs and 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. -
Page 11: Iti Geometry For Twin Rig
Instruction manual 3 ITI GEOMETRY FOR TWIN RIG Setting up a three wire Twin Rig system is a question of finding the balance point between a number of forces. The adjustment of the centre warp is very critical. This is one of the reason for the positioning of the clump, and hence the balance of forces between the doors and the warp and sweeps being so critical to get a square tow. - Page 12 Simrad ITI The figure above shows that the trawl is 3_ off port side. The doors and the clump are not lined up correctly with door/clump distances of 28 and 30 meter. The distances to the trawl doors are 310 and 309 meter and distance to the clump is 307 meters.
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Page 13: Responsibility
Instruction manual 4 RESPONSIBILITY Simrad’s philosophy is to let data from our ITI Trawl System be available for integration with external equipment like chart plotters, winch control systems etc. We are convinced that this will increase the benefit of the product and lead to reduced integration costs. -
Page 14: Serial Lines
Simrad ITI 5 SERIAL LINES The ITI system has four (female) serial ports, A, B C and D. All message transferred via these serial lines are based on the NMEA 0183 format protocol. ETHERNET REMOTE CONTROL MONITOR CENTRONIX TD-L TD-R... - Page 15 Instruction manual Serial line D Serial line A Serial line B Serial line C Ethernet Navigator Echosounder Sonar $IIDBS @IITDS @IITDS @IITDS @IITS2 @IITS2 @IITS2 @IIHFB @IIHFB @IIHFB @IIHFB @IIHB2 $IIMTW $IIMTW $IIMTW $IIZDL @IITFI @IITFI @IITFI @IITPT @IITPT @IITPT @IITPC @IITPR $IIGLL...
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Page 16: Received Message
Simrad ITI Received message All messages listed in table 2 can be received at any time without activating them from the menu. As described above, by setting the NMEA TRANSFER command to ON, all messages received on Ethernet will be transmitted out on serial port B, and vice versa. “- -”... -
Page 17: Serial Line Configuration And Pin Allocations
Instruction manual Serial line configuration and pin allocations Refer to drawing no. 824-108590, ITI Installation manual. → The four serial port (female) connectors are found on the transceiver unit plug panel, located in the bottom of the cabinet. The serial lines can be configured electrically as follows: •... -
Page 18: Serial Port Pin Assignments
Simrad ITI Serial port pin assignments The ITI system is designed to communicate over serial interfaces where control signals are not required. The connectors in the cabinetare femaleand requirea maleconnector forthe serialcable. Table 4 shows the pin assignments for port B (and C) available on the ITI transceiver cabinet. -
Page 19: Nmea 0183 Messages, Definitions
“Simrad standard.” They start with @, but otherwise they follow the main characteristics listed below. • The next two letters (Talker identifier) indicate which system is transmitting the messages. Simrad ITI System uses II as a talker identifier. • Thenextthree lettersindicate thetype ofmessage. Thetelegram may consist of many data fields separated by commas. -
Page 20: Nmea Output From Iti
Simrad ITI NMEA output from ITI $IIVTG,,,xxx,M,yy.y,N,,*hh<cr><lf>Vessel course and speed requires input from a nav. Receiver. → VTG represents the Vessel Track over the Ground. xxx,M is the track bearing, in degrees magnetic. yy.y,N is the speed in knots relative to ground. - Page 21 Instruction manual @IITPC,x,M,y,M,z,M<cr><lf>Trawl Position in Cartesian co-ordinates TPC represents the Trawl Position in Cartesian co-ordinates. x,M is the horizontal distance in metres from vessel centre line. Value is positive if trawl is on starboard side, negative if on port side. requires an active depth sensor on the trawl or manual set depth, if not the slant range will be presented.
- Page 22 Simrad ITI $IIMTW,-xx.x,C*hh<cr><lf> Water temperature at the trawl MTW represents the Meteorological Temperature in the Water. xx.x is the water temperature (° C) measured at the trawl. (Sign prefix only if minus.) Range from -5° C to +30° C. C means the value is in ° Celsius.
- Page 23 Instruction manual $PSIMTH,x.x,M,y.y,M*hh<cr><lf> Trawl Headrope to Footrope and Bottom (Trawl Eye/Height sensor 1) TH represents the distances from the Headrope to the Footrope and Bottom. x.x,M is the distance in metres from headrope to footrope (0 - 100 m). y.y,M is the distance in metres from headrope to bottom (0 - 100 m). $PSIMTE,xx%y,xx%y,xx%y,xx%y,xx%y,xx%y,xx%y,xx%y,xx%y,xx%y,a,x.x,M, Gx,gx,Vx.x *hh<cr><lf>...
- Page 24 Simrad ITI $PSIMSn,xxxx,M,xxxx,M,yyy.y,T,xxx.x,M,hhmmss*hh<cr><lf> n n=1 Spread1 (port trawl door when Twin Rig) n=2 Spread2 (starboard trawl door when Twin Rig) xxx,M slant range in metres to sensor filtered values decimals not used. xxx,M horizontal range in metres to sensor unfiltered values...
- Page 25 Instruction manual $PSIMGn,xxxx,M,xxxx,M,yyy.y,T,yz.z,D,hhmmss*hh<CR><LF> n n=1 grid 1 sensor n=2 grid 2 sensor xxxx,M slant range in metres to sensor filtered values decimals not used. xxxx,M horizontal range in metres to sensor unfiltered values nullfields if depth-sensor not activated (will calculate horizontal range with manual set depth decimals not used.
- Page 26 Simrad ITI $PSIMDE,xxxx,M,xxxx,M,yyy.y,T,zzzz.z,M,a,hhmmss*hh<CR> <LF> DE depth sensor x.x,M slant range in metres to sensor filtered values decimals not used. x.x,M horizontal range in metres to sensor unfiltered values nullfields if depth-sensor not activated (will calculate horizontal range with manual set depth decimals not used.
- Page 27 Instruction manual $PSIMMW,xxxx.x,M,xxxx.x,M,yyy.y,T,z.z,M,y.y,D,c,hhmmss*hh<cr><lf> xxxx.x,M slant range in metres to middle weight (clump) filtered values. xxxx.x,M horizontal range in metres to middle weight unfiltered values nullfields if depth-sensor not activated (will calculate horizontal range with manual set depth). yyy.y,T true bearing (deg.rel.north) to middle weight requires gyro input for reliable data.
- Page 28 Simrad ITI Note $PSIMMW will be sent when clump position undated, only. Update of the new angle parameter due only to change of course, is not supported! @IITFI,x,y,z<cr><lf> Trawl Filling TFI represents Trawl Filling. x,y,z are the catch 1, 2 and 3 messages (off = 0, on = 1, no answer = 2).
- Page 29 Instruction manual @IIDAD,x.x,M,x.x,M<cr><lf> Depth of trawl Ascend/Descend DAD represents Depth Ascend Descend. x.x,M represents Depth of trawl in metres. x.x,M represents change of depth in metres per minute, negative number if ascending. Note This sentence requires an active depth sensor on the trawl. $IIZDL,hhmmss.ss,x.x,a*hh<cr><lf>...
- Page 30 Simrad ITI An example of NMEA output from port B: @IITPT,3089,M,175,P,0375.5,M @IITPC,00162,M,3085,M,0375,M @IIHFB,007.6,M,012.0,M $PSIMTH,007.6,M,012.0,M*19 $IIGLL,5924.462,N,01030.048,E,062216,A*38 @IITTS,-0154,M,03256,M,-0121,M $IIVTG,,,358,M,03.7,N,,*62 $IIZDA,062216.00,02,01,1999,01,00*7B @IIHB2,008.7,M,008.8,M @IITDS,105.5,M $PSIMS1,3021,M,2998,M,177.0,T,105.5,M,062217*5A @IITS2,118.9,M $PSIMS2,3021,M,2998,M,172.6,T,118.9,M,062218*55 @IITFI,1,1,0 @IIDAD,0375.6,M,-001.9,M $IIMTW,03.5,C*15 $PSIMMW,3018.3,M,2996.3,M,174.9,T,0000.8,M,A,062220*7C $SDDBS,,,0187.5,M,,*1A $IIDBS,,,0375.6,M,,*01 $PSIMTE,,29%4,60%3,98%7,97%7,,97%6,97%4,97%2,46%1,B,8.0,M,G1,g7,V3.08*52 $PSIMH1,1557,M,1512,M,189.9,T,008.1,M,015.0,M,143842*25 $PSIMH2,1557,M,1512,M,189.9,T,007.0,M,015.0,M,143843*29 $PSIMS1,1556,M,1511,M,193.1,T,090.2,M,143844*5C $PSIMDE,1557,M,1512,M,189.9,T,0372.0,M,c,143847*4F $PSIMTM,1558,M,1513,M,189.9,T,03.9,C,s,143849*45 857-164777 / A...
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Page 31: Nmea Input To Iti
Instruction manual NMEA Input to ITI $SDDBS,x.x,f,y.y,M,z.z,F*hh<cr><lf> Sounder Depth Below Surface SD represents Sounder Depth. DBS represents Depth of water Below Surface. x.x,f is the depth in feet. y.y,M is the depth in metres. z.z,F is the depth in fathoms. Note Only one of the depth values is required. - Page 32 Simrad ITI $--VTG,,,x.x,M,y.y,N,,*hh<cr><lf> Vessel course and speed -- is the code for the type of system used. -- will be OM if Omega, LC if Loran-C etc. VTG is the abbreviation for Vessel Track Ground. x.x,M is the track bearing, in degrees magnetic.
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Page 33: Telegram From Winch Syncro 2020
Instruction manual $--HDT,x.x,T*hh<cr><lf> Heading, True x.x,T is the heading in degrees relative to true north. $--HDG,x.x,,,,*hh<cr><lf> Heading, Deviation & Variation x.x this is the magnetic sensor heading, in degrees. Telegram from Winch Syncro 2020 This telegram carries the length of trawl wires as measured at the winches. -
Page 34: Nmea - Abbreviations, Iti Aux Menu Selections
Simrad ITI 7 NMEA – ABBREVIATIONS, ITI AUX MENU SELECTIONS In the AUX menu selections only the NMEA start code are indicated. The different codes with comments are as follows: IIZDA Time & date of ITI system IIGLL Geographical position of trawl... - Page 36 E 2003 Simrad AS ISBN 82-8066-013-5 Simrad AS Strandpromenaden 50 Box 111 N-3191 Horten Telephone: +47 33 03 40 00 Facsimile: +47 33 04 29 87 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...
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