Summary of Contents for Autonnic A5023
- Page 1 A5023/24 A5023 A5024 FLUXGATE COMPASS USER AND INSTALLATION MANUAL A5023 A5024 manual 03.docx Jan 2019 19 Dec 2018 Software releases: V016 Hardware versions: 7310-4 Autonnic Research Ltd www.autonnic.com 1 of 19...
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Page 2: Table Of Contents
A5023/24 Table of Contents 1 Introduction and description of fluxgate compass. Description of compass Connections 1.2.1 A5024 1.2.1 A5023 1.2.3 Variants with suffix -CP Switches Indicator light Power supply. Mounting 2 Connecting the compass to your application. To a NMEA-0183 instrument. -
Page 3: Introduction And Description Of Fluxgate Compass
It delivers heading data in two industry-standard forms. The A5023 and A5024 contain a fluxgate with floating core surrounded by high-precision interface circuits which, together with the special clockwise/anticlockwise and offset nulling sequence allow a microprocessor to acquire a binary value from two orthogonal sensors of the horizontal component of the Earth’s magnetic field. -
Page 4: Connections
Green Screen Not connected NOTE 1 Conductors 5 and 8 are connected together inside the A5024 NOTE 2 Wiring does not use the same colours as the A5022 1.2.2 A5023 Conductor Colour Type Function + Supply 10-30V Yellow NMEA IN -... -
Page 5: Variants With Suffix -Cp
A5023/24 1.2.3 Variants with suffix -CP A5023 Conductor Colour Type Function + Supply Yellow NMEA IN + Blue GND and NMEA IN - Green NMEA OUT + NOTE Cable foil and drain wire internally NOT connected to GND Switch Inputs... -
Page 6: Indicator Light
A5023/24 When the A5023-24 is viewed from the front face with the LED facing, then Switch 1 is on the right and Switch 2 is on the left. Switch 1: Start the auto-calibration process Switch 2: Set reference NORTH heading. The A5024/4 must be mounted upright but at any azimuth. -
Page 7: Power Supply
A5023/24 Power supply The compass is compatible with any DC power supply of between 8 and 30 Vdc. Typical supply current during operation is approx. 25mA. The compass is protected against reversed polarity. Note that the operation of the LED adds another 10mA and that during auto- calibration the consumption can be as high as 60mA. -
Page 8: Connecting The Compass To Your Application
NMEA- wire in some installations. 2.2 Compass to a PC serial port In many cases the wires can be joined directly as shown in Fig 2. Alternatively use the Autonnic A3036 serial interface unit. 1 + 8 - 3 0 V P O W... -
Page 9: Output Formats Available From Compass
A5023/24 Output formats available from compass NMEA-0183 The serial output format is: 4800 Baud, 8 data bits, 1 stop bit, no parity. The compass sends information using the standard NMEA-0183 sentence ‘HDG’: Magnetic Heading, Deviation, and Variation. But note that the information of Deviation and Variation is not sent and so blank fields are defined by consecutive commas. -
Page 10: Why The Compass Needs Calibrating
When any compass is installed the magnetic characteristics of the whole installation affect the way the Earth’s field reaches the detector inside the device. Each individual installation will be different and so the A5023 and A5024 are equipped with an auto-calibration routine which corrects for these installation distortions. -
Page 11: Setting Reference North Heading
Autonnic is aware that the need for a constant angular velocity is onerous but the benefit is that it provides a very low residual error –... -
Page 12: Set-Up Suggestions
NMEA-0183 input. Once configured, the compass will remember those settings every time it is powered up. Response: When any of the input sentences are received the A5023 and A5024 will reply with an ‘acknowledge’ output sentence of the format: $PATC,HCHDG,ACK<CR><LF>... - Page 13 A5023/24 List of Commands Section Command Function Factory default: calibration values; fluxgate heading output 5.2.1 rate; fluxgate damping factor; last calibration error code 5.2.2 Set heading offset 5.2.3 Read calibration error code Configure NMEA sentence output 5.2.4 format 5.2.5 Set heading damping value 5.2.6...
- Page 14 A5023/24 5.2.1 $PATC,IIHDG,0CV<CR><LF> Sets the following: Output rate u= 100 milliseconds (10 updates/second), output damping d= 50 percent heading offset f= 0 degrees. 5.2.2 $PATC,IIHDG,AHD,fff.f<CR><LF> Set heading: Forces the heading to a certain value by supplying an offset which is stored and used thereafter.
- Page 15 A5023/24 5.2.4 $PATC,IIHDG,CFG,abc<CR><LF> Configures the output sentence structure and type. [Replies with the standard acknowledge sentence $PATC,HCHDG,ACK<CR><LF>] Where 'a' specifies the heading of the output sentence as follows: a=0 : $HCHDG,hhh.h,,,,<CR><LF> a=1 : $HCHDT,hhh.h,T<CR><LF> a=2 : $HCHDM,hhh.h,M<CR><LF> a=3 : $HCHCC,hhh.h<CR><LF>...
- Page 16 A5023/24 and where 'c' has the following significance: c = 0 or is missing means no ROT c = 1 ROT with 8s average c = 2 ROT with 16s average c = 3 ROT with 32s average The form of the transmitted sentence is: $HFROT,zxxx.x,A*cc<CR><LF>...
- Page 17 A5023/24 5.2.6 $PATC,IIHDG,DLED<CR><LF> Disable LED: Replies with the standard acknowledge sentence ($PATC,HCHDG,ACK<CR><LF>). Note : LED will be automatically enabled during calibration process. 5.2.7 $PATC,IIHDG,DLYn.n<CR><LF> Startup Delay Sets a delay from Power-up to the transmission of the first output sentence where n.n is in seconds with a maximum of 6.5 5.2.8...
- Page 18 A5023/24 5.2.10 $PATC,IIHDG,RCV<CR><LF> This command is to read the calibration table values and the response is in the form of the example shown below: $TCF0,0000071C0E381554 $TCF1,1C70238C2AA831C4 $TCF2,38E03FFC47184E34 $TCF3,55505C6C63886AA4 $TCF4,71C078DC7FF88714 $TCF5,8E30954C9C68A384 $TCF6,AAA0B1BCB8D8BFF4 $TCF7,C710CE2CD548DC64 5.2.11 $PATC,IIHDG,RHD,nn<CR><LF> Internal filter response Where nn is the damping value within the range 0 to 99 5.2.12...
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Page 19: References
5.2.17 $PATC,IIHDG,XCL<CR><LF> Abort Auto-Calibration. Refer to section 1.3. 6 References A5023-24 data sheet NMEA-0183 specification Autonnic and the *A logo and Fluxgateworld are registered Trade Marks of Autonnic Research Ltd ©2006 - 2018 Autonnic Research Ltd Tollesbury Essex CM9 8SE www.autonnic.com...
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