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Gill Instruments Ltd

_____________________________________________________________________________________________________________

________________________________________________________________________________________________
MaxiMet

Page 18

Issue 1

Doc. No. 1957-PS-000x

March 2015

4.3.

Cabling

MaxiMet has five communication connection options:

USB (using the 1.8m MaxiMet RS232 to USB cable, Part No. 1957-10-065).

RS232

RS422

RS485 (two wire point to point)

SDI-12

It is important that the cable is appropriate for the chosen communication network. The following
sections describe the recommended types and maximum lengths of cable in each case.

4.3.1 Cable type

Wire type:

24AWG

Wire size:

7x32 AWG.

Cable outer diameter:

6-12mm (to match the connector gland).

For RS422/485 operation the cable should have twisted pairs with drain wire, screened with
aluminised tape, with an overall PVC sheath. Typical wire size 7/0.2mm (24 AWG).

The following table shows an example manufacturers’ reference; other manufacturers’ equivalents
can be used.

Recommended Belden cable types

Application

No. of

Pairs

24 AWG

Gill Ref.

24 AWG
Belden Ref.

24 awg Batt

Electronics Ref.

SDI-12

2

-

9729

-

Digital RS232 or RS485 2 wire

3

026-02660

9730

91030

Digital RS422/RS485 4 wire

4

026-03156

9728

91199

4.3.2 Cable length

The maximum cable length is dependent on the chosen communication method.

The following table shows the maximum cable lengths for the supported communication protocols
at the given baud rates, using the recommended cable. If any problems of data corruption etc. are
experienced, then a slower baud rate should be used. Alternatively, a higher specification cable
can be tried.

Suggested maximum cable lengths for supported communication networks

Communication format

Baud rate

Max. cable length

RS232

19200

6.5M

RS422/RS485

19200

1000M

SDI-12

1200

90M

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Содержание MaxiMet GMX200

Страница 1: ...7 0X00 60 000 Doc No 1957 PS 001 Issue 1 Gill Instruments Limited Saltmarsh Park 67 Gosport Street Lymington Hampshire SO41 9EG UK Tel 44 1590 613500 Fax 44 1590 613555 Email anem gillinstruments com...

Страница 2: ...ION 15 4 1 Equipment supplied 15 Optional Extras 15 4 2 Connector and Cable Assembly 15 4 3 Cabling 18 4 3 1 Cable type 18 4 3 2 Cable length 18 4 4 Connections 19 View of the MaxiMet connector 19 4 5...

Страница 3: ...3 Summary 53 Safe Mode Method 1 53 Connection 53 Safe Mode Method 2 56 Connection 56 7 VIEWING MAXIMET DATA STRING 58 7 1 Use MetSet to View the MaxiMet Data String 58 Opening MetSet 58 7 2 Use a Term...

Страница 4: ...e in continuous development and therefore specifications may be subject to change and design improvements without prior notice The information contained in this manual remains the property of Gill Ins...

Страница 5: ...mber in family so 0200 for GMX200 0600 for GMX600 60 wind speed range 60 for 60 m s wind range 000 Base model further options as available SENSOR PARAMETER GMX200 GMX600 Wind Speed Relative Wind Direc...

Страница 6: ...t E and E and W transducer If for example a North wind is blowing then the time taken for the pulse to travel from N to S will be faster than from S to N whereas the W to E and E to W times will be th...

Страница 7: ...point Barometric Pressure GMX600 Barometric pressure output is provided by a solid state device fitted on to a circuit board inside a MaxiMet moulding Rain GMX600 A reading of Rain levels is provided...

Страница 8: ...n Pa T Temperature in K Result e g 08 14 g m3 AVGSPEED Average Speed Outputs the World Meteorological Organisation WMO Average Wind Speed reading based on AVG short and AVG long settings see page 36 R...

Страница 9: ...t Direction Outputs WMO Gust Direction Result e g 123 degrees GSPEED Gust Speed Outputs WMO Gust Speed Result e g 015 15 Metres second default PASL Pressure at Station Level Outputs Barometric Pressur...

Страница 10: ...accumulated rain reading updated at the output rate Is set to zero on MaxiMet power up Is set to zero when the clock reads 23 59 59 to 00 midnight and is the default setting For continuous measurement...

Страница 11: ...ummary Default Data String GMX200 Node Relative Wind Direction Relative Wind Speed Corrected Wind Direction Date and Time Supply Voltage Status Checksum Q 127 000 03 000 2000 01 01T00 40 50 2 10 5 000...

Страница 12: ...above 40 and up to 60m s Resolution 0 01m s Threshold 0 01m s Wind Direction Range 0 359 Degrees No dead band Accuracy 3 0 01m s to 40m s 5 above 40 and up to 60m s Resolution 1 Compass Range 0 359 d...

Страница 13: ...Resolution 0 2mm tip Accuracy 2 Units of Measure milli metres inches Real Time Clock Format Date and Time YYYY MM DDThh mm ss s e g 2014 12 25 T22 34 56 1 Updating Manual Setting Power Loss Accuracy...

Страница 14: ...600 80mA at 12v dc Environmental Protection Class IP66 EMC BS EN 61326 FCC CFR47 Parts 15 109 Operating Temperature 40 C to 70 C Storage Temperature 40 C to 80 C Humidity 0 100 RoHS Compliant Yes Mech...

Страница 15: ...MQ Arrange Backshell Parts Trim back the screened cable outer and screen sleeves 40mm Trim back the screen drain wires flush with the outer sleeve Strip back the connection wires by 5mm and tin solder...

Страница 16: ...March 2015 Put the parts on the cable in the order as shown below Whilst squeezing the red retainer in the direction of ARROWS A pull in the direction of ARROW B A A B Your connector should now resem...

Страница 17: ...contacts are inserted push the red retainer into place NB The retainer can only be pushed back into place if the contacts are fully engaged Fit the connector to the MaxiMet so that you can finish asse...

Страница 18: ...with drain wire screened with aluminised tape with an overall PVC sheath Typical wire size 7 0 2mm 24 AWG The following table shows an example manufacturers reference other manufacturers equivalents...

Страница 19: ...ove noise immunity View of the MaxiMet connector 9 way connector and cable connections 4 5 Power supplies MaxiMet units Supply Voltage 9v to 30v DC Normal Mode Current 25mA Average 12v dc GMX200 80mA...

Страница 20: ...axiMet 9 Way Connector PC Typical 9 Way D Connector Signal names Pin nos Cable 3 twisted pairs Signal names Pin no s TXD RXD 5 7 RXD TXD 2 3 Signal Ground 1 Signal Ground 5 Not connected this end N A...

Страница 21: ...us to POLL the node address letter may be changed if required 4 Leave connector Pin 8 open circuit 4 9 Using SDI 12 2 wire network not a default setting 1 MaxiMet default factory comms setting is RS23...

Страница 22: ...Gill Instruments Configuration cable Software Gill MetSet Software used as a configuration Tool supplied on MaxiMet CD will run on PC s with up to and including Windows 8 and can be downloaded free fr...

Страница 23: ...y Gill keeping the length below the maximum allowed Where the cables are cut and re connected junction boxes plugs and sockets the cable screen integrity must be maintained to prevent the EMC performa...

Страница 24: ...tic fields Electric motors usually generate magnetic fields that are much stronger than the earth s field It is recommended that MaxiMet be moved as far away from the motors as possible As a guide ens...

Страница 25: ...the outer sleeve clockwise to connect and lock the plug Fix the MaxiMet to the tube using the 3 stainless steel screws provided Maximum mounting screw torque 4 Nm For hostile environments you should s...

Страница 26: ...00x March 2015 Dimensions in mm GMX200 GMX600 North Alignment Pointers North Alignment Notch Support tube 1 75 inch 44 45mm outer diameter 3mm wall thickness With 3 equidistant M5 tapped holes Use a h...

Страница 27: ...te http www gillinstruments com main software html 6 1 MaxiMet Default Configurations GMX200 Factory Default Data String STX Q 127 000 03 089 2000 01 01T00 40 50 2 10 5 0000 ETX 40 CR LF STX Node lett...

Страница 28: ...g Function Comms Levels RS232 Baud Rate 19200 Data Connection Data Bits 8 Parity None Stop Bits 1 Flow Control None Node ID Q Output rate 1Hz Message Mode Continuous ASCII Set Up Carriage return and l...

Страница 29: ...ction Wind speed Corrected Wind Direction Pressure Humidity Temperature Dewpoint Total Precipitation Precipitation Intensity Date and Time Supply voltage Status code ETX Checksum Carriage Return Line...

Страница 30: ...te 1Hz Message Mode Continuous ASCII Set Up Carriage return and line feed Echo on North Alignment 0 Sensor WindSpeed On Wind Speed Units MS Metres Second Pressure Sensor On Pressure Units Hecto Pascal...

Страница 31: ...MaxiMet connected to your PC MetSet by default selects the first device detected For most applications it is recommended to click on the MetSet Connect and Read button Figure 1 Opening MetSet Screen M...

Страница 32: ...SENSOR WIND ON UNITS WIND MS NODIR 0 00 AVGSHORT 60 AVGLONG 10 SENSOR COMPASS ON SENSOR TEMP ON UNITS TEMP C SENSOR DEWPOINT ON UNITS DEWPOINT C SENSOR PRESS ON UNITS PRESS HPA HASL 00000 00 HASTN 00...

Страница 33: ...Set OFFLINE in Grey indicates that MetSet is being used without a MaxiMet in communication with MetSet 19200 COM10 19200 is a report on the MaxiMet Baud rate setting COM 10 is a report on the MaxiMet...

Страница 34: ...etSet retrieves a MetSet edit PC file and updates MetSet with these settings Save Configuration File When selected MetSet edit settings are saved to a PC file location Back Up Device Settings When sel...

Страница 35: ...otocol GILL MODBUS or SDI 12 for SDI 12 also set MetSet Comms Interface to SDI 12 Interface RS232 RS422 RS485P2W point to point SDI 12 and EXT EXT setting means RS422 or RS232 selected by a wire link...

Страница 36: ...Long Term Average 10 1 10 Configures WMO Long Term Average as the defined multiple of the short Term Average i e if AVGSHORT is 10 then short term average is a rolling average of the last ten outputs...

Страница 37: ...e short term output period and reset at the end of short term output period GSPEED Outputs Average Wind Gust Speed The Maximum Gust Direction is the direction of the maximum gust measured over the sho...

Страница 38: ...ich the pressure sensor operates is usually constant the station height a correction is made to make the reading of the pressure sensor seem as if it were made at sea level This means that the pressur...

Страница 39: ...r DIR Outputs wind direction readings SPEED Outputs wind speed readings CDIR Outputs Compass corrected wind direction readings PRESS Outputs the Barometric Pressure reading RH Outputs Relative Humidit...

Страница 40: ...t is fitted PASL Outputs Barometric Pressure at Sea Level if HASL figure set see page 38 p0 p1 exp g h R T where p0 air pressure at sea level Pa p1 air pressure at sensor Pa h sensor altitude above se...

Страница 41: ...on AVGCDIR Outputs WMO average corrected compass direction reading based on AVG short and AVG long settings COMPASSH Compass Heading reading The System Page can be used to select Power Mode 0 or 1 0 i...

Страница 42: ...Address 1 to 247 Data Bits 8 for Modbus RTU 7 for Modbus ASCII Stop Bits 2 for No Parity 1 for Even Odd Parity Parity NONE ODD or EVEN Termination Char ASCII code 10 0 255 Inter Char Timeout mS 1000 5...

Страница 43: ...rees This is a correction factor that is added to the magnetic north heading from the compass Map and declination figures in decimal figures can be obtained from http www geosats com magdecli html htt...

Страница 44: ...ra 6 2 Click on the Edit Comms page and select Set Protocol for SDI 12 and Set Interface for SDI 12 No other settings changes are required Click on Save Settings to Device on the Online Mode Menu Shut...

Страница 45: ...14490002 CR LF aM Address Relative Wind Direction Relative Wind Speed Corrected Wind Direction Corrected Wind Speed GPS option unit only Status atttn CR LF a is unit identifier ttt is time in seconds...

Страница 46: ...option unit only Status and CRC atttn CR LF a is unit identifier ttt is time in seconds n is number of data values Measurement command to retrieve a reading of the maximum time the MaxiMet will take...

Страница 47: ...heck CRC Frame Start Character 3A Hex 3 5 Characters Silence Frame End Characters CR LF 0D 0A Hex 3 5 Characters Silence Gaps in Message 1 Second 1 5 Times Character Length Start Bit 1 1 Data Bits 7 8...

Страница 48: ...9600 or 19200 supported Node ID Default is Q Not used for MODBUS Output Rate Default is 1Hz Set update rate for MaxiMet Data 0 25Hz to 1Hz Message Mode Default is CONT Select POLL mode and MaxiMet wil...

Страница 49: ...ill mode output string their Holding Register contents shall be set to the Maximum Positive value 0x7FFFFFFF for 32 bit format data both floating point and integer and as 0x7FFF for 16 bit format data...

Страница 50: ...ta strings comprise of WIMWV 049 R 000 03 N A 03 CR LF Where WIMWV Wind Instrument Mean Wind direction and Velocity 049 Wind Direction R Relative Wind measurement wind speed and or direction informati...

Страница 51: ...f where north marker is aligned Wind Speed only available if a GPS option is fitted N Knots NMEA output fixed to Knots measurement only A Acceptable measurement V is a void fail measurement OC Hex Che...

Страница 52: ...Doc No 1957 PS 000x March 2015 Example GMX 600 Data WIMWV 069 R 004 06 N A 00 WIMWV 122 T N A 14 WIXDR C 023 2 C TEMP P 1 0281 B PRESS H 037 P RH Y 000 0 M PRECIP 0A Followed 1 second later by WIMWV 2...

Страница 53: ...configuration setting may have been made For instance if the unit has been set for SDI 12 operation Safe Mode can be used to change the communication option back to RS232 or RS422 Safe Mode Method 1 C...

Страница 54: ...____________________________________________________________________ MaxiMet Page 54 Issue 1 Doc No 1957 PS 000x March 2015 Enter the MaxiMet COM Port connection number Ensure power is now disconnecte...

Страница 55: ...________________________________________________________ MaxiMet Page 55 Issue 1 Doc No 1957 PS 000x March 2015 Now re connect power to the MaxiMet If using the Gill Instrument RS232 to USB configurat...

Страница 56: ...minal program e g Tera Term Putty etc If using Gill Wind Software note that the Tools features are not applicable Open Gill Wind Software Serial Port Set the drop down menu to the required COM Port Co...

Страница 57: ...__________________________________________________________________________ MaxiMet Page 57 Issue 1 Doc No 1957 PS 000x March 2015 Close the 4800 baud rate Wind or Terminal Program Power down the MaxiM...

Страница 58: ...re allows you to view the MaxiMet data string graphically Before you can use MetSet check that MaxiMet is correctly connected to a Serial COM port or USB COM port on your PC NOTES MetView is compatibl...

Страница 59: ...Doc No 1957 PS 000x March 2015 7 2 Use a Terminal Program to View the MaxiMet Data String There are many terminal programs that might be used to view the MaxiMet data string examples include HyperTer...

Страница 60: ...______________________________________________ ________________________________________________________________________________________________ MaxiMet Page 60 Issue 1 Doc No 1957 PS 000x March 2015 C...

Страница 61: ...5 Setting up a logging file Select File Log Look in select a log file location Select Save in destination E g Desktop File Name add the name for the file e g teraterm Tick options as required e g Time...

Страница 62: ...e necessary with a non aggressive cleaning solution ideally once a week Where this is not possible cleaning should be done during regularly scheduled visits to the sensor and site It is recommended th...

Страница 63: ...maintenance at Gill instruments every 12 to 24 months to ensure proper performance Barometer The Barometer device is located internally and is not maintainable or replaceable by a user If required re...

Страница 64: ...for sources of external signal interference One way communication Check that the wiring is in accordance with the manual Unexpected Temperature Dewpoint readings Check that the Temperature and Dewpoin...

Страница 65: ...ackaging and returned to your authorised Gill distributor with a full description of the fault condition 8 7 Guarantee For terms of guarantee contact your supplier Warranty is void if the unit is dama...

Страница 66: ...te GND GrouND HEX HEXadecimal I P InPut IP66 Protection Classification KPH Kilometres per Hour LF Line Feed m s Metres per second MAG MAGnitude scalar reference to wind speed MAX MAXimum MIN MINimum M...

Страница 67: ...Met Weather Station GMX200 Variants MaxiMet Weather Station GMX600 Variants Manufactured by Gill Instruments Ltd Saltmarsh Park 67 Gosport Street Lymington SO41 9EG to which this declaration relates a...

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