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9 Maintenance

The USH- 9 generally does not require any special maintenance. However, the device should be
inspected occasionally for damage and a dirty sensor surface. To remove dirt use a wet cloth with
little force. Do not use any abrasive detergent or scraping tool!

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Manual

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Содержание USH-9

Страница 1: ...Sommer Messtechnik All rights reserved Manual Setup version 2 45 Firmware 1 83 12 07 2021 USH 9 Ultrasonic level sensor...

Страница 2: ...permission of Sommer Messtechnik This applies to printed as well as digital issues of this manual Sommer Messtechnik Strassenh user 27 6842 Koblach Austria www sommer at E office sommer at T 43 5523 5...

Страница 3: ...EU conformity This product is in conformity with the following standards EMC 2014 30 EU EN 61326 1 2013 LVD 2014 35 EU EN 62311 2008 EN 62368 1 2014 RoHS II 2011 65 EU RoHS III 2015 863 EU...

Страница 4: ...performed by trained personnel or an engineer of Sommer Messtechnik Only replacement parts supplied by Sommer Messtechnik should be used for repairs n Make sure that NO power is connected to the equi...

Страница 5: ...ction 21 7 3 Required tools and equipment 21 7 4 Mounting 22 7 5 Wiring 22 7 5 1 RS 485 22 7 5 2 SDI 12 23 7 5 3 How to wire analog outputs 24 7 6 Testing 24 7 7 Adjustment 24 7 8 Start up 25 8 Operat...

Страница 6: ...up file 44 10 10 Update firmware 44 11 Configuration of the USH 9 47 11 1 Software tools 47 11 2 Configuration with Commander support software 47 11 3 Configuration with a terminal program 50 11 4 Con...

Страница 7: ...l 64 12 3 6 Standard protocol 68 12 3 7 Sommer old protocol 70 12 3 8 RS 485 commands 71 12 3 9 Sommer CRC 16 73 12 4 SDI 12 74 12 4 1 What is SDI 12 74 12 4 2 What can I do with it 74 12 4 3 Configur...

Страница 8: ...B Level decimals 104 D D C Temperature unit 105 D D D Temperature decimals 105 D E Temperature 105 D E A Offset 105 D E B Adjustment 105 D E C Test 106 D F IOUT settings 106 D F A Status 106 D F B IOU...

Страница 9: ...D I F OP wake up sequence 116 D I G OP prefix holdback 117 D I H MODBUS set default 117 D I I MODBUS device address 117 D J RS 485 Port 117 D J A Baud rate 118 D J B Parity stop bits 118 D J C Minimu...

Страница 10: ...ent data gaps 127 B 3 Firmware software 127 B 3 1 Commander loads wrong setup 127 B 3 2 Firmware update via RS 485 is aborted 127 B 4 SDI 12 128 B 4 1 Data logger receives no SDI 12 data 128 B 4 2 The...

Страница 11: ...onic signal between a variable surface and the USH 9 sensor and translates it to a snow or water level An integrated processor compensates the detected signal for temperature and filters interfering r...

Страница 12: ...are present Qty Name 1 USH 9 sensor including sensor mount sensor cable 10 m and RS 485 to USB con verter 1 Manual and Commander Software on USB stick 1 Commander support software In case of missing o...

Страница 13: ...mander window and follow the instructions During this procedure the communication assistant will search for connected devices Upon successful completion the new connection is added to the connections...

Страница 14: ...s see Analog output 6 Send any modifications to the USH 9 by clicking Upload modified parameters to device 3 3 Acquire measurements 1 Establish a connection to your device as described in Working with...

Страница 15: ...bing reflec tions e g from precipitation This permits reliable and accurate level measurements even during rain or snowfall or when the snow is of very low density As the speed of sound depends on tem...

Страница 16: ...ace 4 yellow RS485 A2 1 x RS 485 1200 115200 Baud 5 grey RS485 B2 SDI 12 interface 6 pink SDI 12 1 x SDI 12 1200 Baud Analog outputs 7 blue IOUT2 Temperature 4 20 mA 8 red IOUT1 Snow depth 4 20 mA NOT...

Страница 17: ...kHz Beam aperture 12 Temperature measurement Temperature sensor Pt1000 with radiation shield Measurement range 40 60 C 40 140 F Accuracy 0 3 C Resolution 0 01 C Power Power supply 9 28 VDC Reverse vol...

Страница 18: ...140 F Environmental humid ity 0 100 rH Protection rating IP 64 Lightning protection Integrated protection against indirect lightning with a discharge capacity of 0 6 kV peak Housing material Anodized...

Страница 19: ...ence snow accumulation and snow melt 2 The terrain should be flat or only be slightly sloping There should be no troughs or hills 3 There should be no boulders trees fences or other objects on and aro...

Страница 20: ...7 2 2 Figure 4 Measurement spot and USH 9 position It is recommended to mount the USH 9 one meter above the maximum expected level and minimum 3 m above ground The maximum mounting height is 10 5 m a...

Страница 21: ...the measurement site permits sufficient current dissipation it is strongly recom mended to equip the sensor support or mast with properly dimensioned lightning protection Consult an expert for advice...

Страница 22: ...ds the base of the mast as this can cause unwanted reflections To avoid such a situation consider rotating the mast or selecting another measurement spot NOTE The distance between the USH 9 and the sn...

Страница 23: ...figure below SDI 12 uses a shared bus with a ground wire a data wire indicated as SDI 12 and an optional 12 V wire NOTE The connection with the 12 V power supply is optional and depends on the connec...

Страница 24: ...the distance measurement 1 Select the Parameter F2 tab and open the menu Level and distance 2 Click the button Level distance test 3 Note the distance value displayed in the pop up window 4 Place a fl...

Страница 25: ...leted enter the correct level in the pop up window and press enter 4 Repeat the Level distance test and verify the reading 7 8 Start up After successful testing verify that the measurement data are re...

Страница 26: ...window select Mode Connection and the previously created connection from the drop down list 6 Click Connect to establish a connection with the USH 9 If the connection was successful a green icon is d...

Страница 27: ...to check a second distance level ATTENTION If the USH 9 is configured for snow applications do not use the general measurement function Measurement F3 tab of the Commander The snow application mode h...

Страница 28: ...equire any special maintenance However the device should be inspected occasionally for damage and a dirty sensor surface To remove dirt use a wet cloth with little force Do not use any abrasive deterg...

Страница 29: ...ing download from data loggers and transmission to MDS Meas urement Data server n Terminal window to check data transfer and to access device settings directly 10 2 System requirements The Commander s...

Страница 30: ...4 Read the instructions and click Next 5 Select the installation type and click Next 10 Support software Commander 30 Manual...

Страница 31: ...ation folders n User program folder Users User AppData Local Programs Sommer Commander Data structure Users User AppData Local Programs Sommer n Specific folder default C Sommer Commander Data structu...

Страница 32: ...ocuments Sommer n Specific folder default C Sommer Commander Data structure default C Sommer 6 Select the installation directory and click Next 7 Select the features to be installed and click Next 10...

Страница 33: ...8 Click Install to start the installation 9 Click Finish to complete the installation 10 Support software Commander Manual 33...

Страница 34: ...t will search for connected devices Upon successful completion the new connection is added to the connections list tab Connections F8 5 In the Communication Section at the right hand side of the Comma...

Страница 35: ...d setup and Record measurements 10 4 3 Create a new connection 1 Select the Connections F8 tab in the Commander 2 Click New connection 3 In the section Connection settings enter a name of the new conn...

Страница 36: ...n assistant in the Commander window 2 In the pop up window choose the required connection and click Next 3 Verify that the USH 9 is connected to your PC and a power supply Click Next 10 Support softwa...

Страница 37: ...4 Select Logger 115200 Bd and click Next 5 Select Scan ports and click Next 6 The Commander now scans all available ports 10 Support software Commander Manual 37...

Страница 38: ...7 Adopt the Name provided by the communication assistant Click Next 8 The Commander now scans the selected port for connected devices 10 Support software Commander 38 Manual...

Страница 39: ...9 Adopt the Name of the new station or enter a new name Click Next 10 A new station has now been created Click Finish 10 Support software Commander Manual 39...

Страница 40: ...ultiple selections are possible the default con nection can be selected by ticking the circular field 4 Depending on the connection type enter the additional information e g Address for a Bluetooth co...

Страница 41: ...your device as described in Working with connections 2 Download the setup of your device as described in Download setup 3 Select the Measurement F3 tab 4 If the connection with your device is active...

Страница 42: ...s measurement mode can be stopped by clicking Stop polling or it is finished automatically after 30 minutes 10 8 Working with spectra 10 8 1 Record spectrum 1 Establish a connection to your device as...

Страница 43: ...loads the setup currently active on the USH 9 This may take some time if you are downloading the setup for the first time to your PC Consecutive downloads of a setup with the same version number are u...

Страница 44: ...rking with connections 2 Select the Parameters F2 tab 3 Download the setup currently on the USH 9 as described in Download setup and save it by click ing Save parameter file This step is recommended t...

Страница 45: ...ta logger During the update process the pop up window may show the following mes sages The programmer is not ready power needs to be on The programmer is active The firmware update has finished 6 Clos...

Страница 46: ...meters from device The download of the new parameter list might take a few minutes After completion the new firmware and setup versions will be displayed in the Information section 10 Support software...

Страница 47: ...ommander support software Follow the steps below to modify the configuration parameters of the USH 9 1 Establish a connection between your PC and the USH 9 as described in Connect the USH 9 to your PC...

Страница 48: ...minutes After that the device is known to the PC and consecutive downloads are much faster 3 Save the parameter file to your PC by clicking Save parameter file This step is recommended to track any c...

Страница 49: ...4 Adapt the parameters required for your application Changed values are displayed with a pink background 11 Configuration of the USH 9 Manual 49...

Страница 50: ...elow to modify the configuration parameters of the USH 9 1 Establish a connection between your PC and the USH 9 2 In the terminal window enter three question marks in quick succession The main para me...

Страница 51: ...es are confirmed with Return Enter or discarded with Esc Menus are closed with X After closing the main menu with X the sensor performs an ini tialization 11 4 Conflict messages During configuration v...

Страница 52: ...tion is changed to off Table 2 Parameter conflict messages 11 4 2 Setup conflict A setup conflict message as listed below is returned if a modified setup with conflicting parameters is loaded onto the...

Страница 53: ...d in the table below The commands to trigger measurements via RS 485 and SDI 12 are described in Communication Measured data are either returned directly after the measurement or can be requested by c...

Страница 54: ...ettings as all values are saved internally in this format They are set in the parameter menu Units and decimals ATTENTION If units or decimals are changed related parameters may need to be adjusted 11...

Страница 55: ...ration of 6 s is recom mended 11 6 2 Level distance test Function to test the level distance measurement Initiates a measurement and returns the current distance and level 11 6 3 Adjust level Function...

Страница 56: ...gured for snow depth measurements If the instrument is used for water level monitoring adapt its configuration as described in Configuring the USH 9 for water level measurements 11 6 6 Moving filter d...

Страница 57: ...e buffer size is smaller than 15 two third of the values are eliminated 11 7 Configuring the USH 9 for snow measurements By default the USH 9 is configured for snow applications This can be checked in...

Страница 58: ...ns of your river or channel See Parameter defin itions or more details ATTENTION Make sure to upload the modified parameters to the USH 9 and test the new settings as described in How do I test the US...

Страница 59: ...can be selected in OP information 12 2 1 Main values Index Measurement value Unit Description 01 Level mm 02 Distance mm 03 Temperature C Air temperature 04 Status Status of snow cover 3 digit number...

Страница 60: ...hat can be expected The value strongly depends on the type of precipitation wet snow that falls in large flakes gives high values cold small flakes give lower values even though snowfall can be intens...

Страница 61: ...e 21 Case temperature C Diagnostic variable 22 Error code1 Diagnostic variable Table 6 Analysis values 12 2 4 Exception values Measurement data may be returned with the following exception values Valu...

Страница 62: ...d alone data acquisition system e g a data logger the para meters listed in RS 485 Protocol may need to be adapted System key and device number The system key and device number are used to identify a...

Страница 63: ...o ensure that it receives the most recent data Operation modes The selected combination of measurement trigger and output time determines the following oper ation modes Mode Parameter Pushing Polling...

Страница 64: ...elected under Output pro tocol OP 12 3 4 Data output options Data are returned in two different formats selectable in Output protocol OP n Sommer protocol n Standard protocol 12 3 5 Sommer protocol Th...

Страница 65: ...er one digit is reserved for the decimal character Values are returned right aligned so blanks may occur between index and value Parameter Format Description Index dd 2 numbers Value xxxxxxxx 8 charac...

Страница 66: ...3 25 25 Temperature 04 0 Status 3883 Closing sequence Table 11 Main values in Sommer protocol Special values Special values are returned as in the following example EXAMPLE M0001G01se01 1461 02 1539 0...

Страница 67: ...for the analysis values 9 to 15 0 933 8 Signal focus 10 43 8 Signal strength 11 34 Half value width 12 43 23 Noise ratio 50 13 13 51 Noise ratio 85 14 9 Echo amp 15 28 6 Var 1 7E66 Closing sequence M...

Страница 68: ...s System key Dd Device number Dd Table 14 Header of the Standard protocol Measurement values Measurement values are returned in sequence and are separated by a blank A measurement value has a length o...

Страница 69: ...surement values 1461 Level 1359 Distance 25 38 Temperature 0 Status Table 16 Main values in Standard protocol Special values Special values are returned as in the following example EXAMPLE S_0001 1004...

Страница 70: ...9 2 Signal focus 43 8 Signal strength 30 Half value width 42 85 Noise ratio 50 13 56 Noise ratio 85 9 Echo amp 25 1 Var 1 1 Var 2 3023 Var 3 1563 Dist Max echo 5543 Dist Last echo 1473 Distance 0 C 25...

Страница 71: ...ure of serial commands and answers W0001 mt BE85 is described in the following table Parameter Format Description Start character Identifier X W USH 9 returns a confirmation on receipt This command ty...

Страница 72: ...ement values XX Read a parameter with identifier XX XX xxxx Write a parameter with identifier XX and the value xxx Table 20 List of Sommer bus commands Trigger a measurement The command mt triggers a...

Страница 73: ...C 16 cyclic redundancy check used in data transmission of Sommer devices is based on the ZMODEM protocol When data are exchanged between two devices the receiving device calculates the CRC value This...

Страница 74: ...g data logger address 0 USH 9 address 1 n If the USH 9 operates in polling mode Measurement trigger set to SDI 12 RS 485 meas urements are triggered by M commands and data are retrieved by D commands...

Страница 75: ...er 0 2591 706 25 53 62 CR LF 0D0 Answer 0 56 2 125 12 32 CR LF Value Content 0 Sensor address 2591 Measurement with index 01 706 Measurement with index 02 25 53 Measurement with index 03 62 Measuremen...

Страница 76: ...ress EXAMPLE 0I Answer 013Sommer USH 140r90 USH 9 CR LF The answer contains the following information 0 SDI 12 address 1 SDI 12 version prior to the point 3 SDI 12 version after the point Sommer Descr...

Страница 77: ...esults After each measurement results are requested with the command aDn with a the sensor address and n the index of the returned data string EXAMPLE 0D0 Answer 0 2591 706 25 53 0 CR LF The leading 0...

Страница 78: ...ameter The configuration parameters of a SOMMER sensor are read with the command aXRpp and written with the command aXWpp vvv with a the sensor address pp the parameter identifier and vvv the value of...

Страница 79: ...er each configuration change 12 5 Modbus 12 5 1 What is Modbus Modbus is a serial communication protocol used for transmitting information over serial lines between electronic devices The device reque...

Страница 80: ...85 B Table 21 Modbus wiring NOTE If the USH 9 is operated with multiple Modbus devices within the same network termination resistors may be required Please contact Sommer Mess technik for details 12 5...

Страница 81: ...cs and open the menus RS 485 protocol and RS485 and take a screenshot of the associated parameters This and the previous step are helpful if you need to switch back to the standard communication mode...

Страница 82: ...nput if measurements are triggered by a trigger input D all allowed if measurements are triggered by one of the previous options NOTE Modbus cannot trigger measurements Make sure to use the trig ger o...

Страница 83: ...9 Navigate to RS485 protocol and select MODBUS set default Please note that the index let ters might be different for your Sommer device 12 Communication Manual 83...

Страница 84: ...splayed 12 Enter X until you get back to the main menu The Sommer device is now restarted and avail able for Modbus communication As the connection parameters have been changed to Mod bus the connecti...

Страница 85: ...hanged Parameter Modbus setting OP measurement output just per command Output protocol OP Modbus MODBUS device address 35 Sleep mode Modbus slow Parity stop bits even par 1 stop Baud rate 19200 Flow c...

Страница 86: ...each measurement Register address Variable Unit value Bytes Format Tes value 0 Hardcoded test value 2 7519 4 float Main val ues 2 Level mm1 4 float 4 Distance mm1 6 Temperature C F 8 Status Special v...

Страница 87: ...nfo 65533 Device type and con figuration 320X 2 unsigned int 65534 Software version XYYZZ 2 unsigned int 65535 Modbus implementation version 10100 2 unsigned int Table 22 Input registers Read and writ...

Страница 88: ...ty 2 stop bits 3 even parity 1 stop bit 4 odd parity 1 stop bit Table 23 Holding registers Report slave ID The Modbus function 17 report slave ID read only can be used to read basic information of the...

Страница 89: ...2 27 74 10100 Separator 1 20 Vendor string 7 53 6F 6D 6D 65 72 20 Sommer Separator 1 20 Device configuration 7 52 47 2D 33 30 20 20 RG 30 Separator 1 20 Software version 7 32 5F 37 31 72 30 31 2_71r0...

Страница 90: ...ecommend to use a meaningful name for later recognition e g Modbus31 19200 to indicate port 31 and Baud rate 19200 Select the Type Serial connection and choose the Port your sensor is connected to set...

Страница 91: ...3 Click Save connection 4 In the Communication window select Mode Connection and choose the Connection you have created Then click Connect 12 Communication Manual 91...

Страница 92: ...anges 6 Now two options are available to revert communication back to the Sommer protocol A If a parameter file is available that has the Sommer protocol enabled the file can be loaded by clicking Ope...

Страница 93: ...s available the device has to be reset to its default configuration 1 Click into the Terminal window and type to enter the sensor menu 2 Navigate to Special functions and select Set factory default 12...

Страница 94: ...tion 7 Establish the original connection to the Sommer sensor as described in Configuration 8 Download the sensor s parameters in the Parameters F2 tab adapt the required parameters or upload your ori...

Страница 95: ...action e g operate a switch 13 2 How to wire analog outputs Connect the analog outputs of the USH 9 to a data acquisition device according to the figure below NOTE If a data logger is connected to th...

Страница 96: ...s and their analog output range are configured as described below NOTE The analog outputs may return currents between 0 and 21 mA However the accuracies stated in the specifications are only valid for...

Страница 97: ...d as an ana log 4 20 mA signal on pin 7 of the MAIN connector If the air temperature is selected as output the span is set to 100 C and the offset to 40 C as default If one of the status options is se...

Страница 98: ...Snowfall is detected if Snowfall precipitation limit is exceeded and the tem perature is below Snowfall max temperature 6 status all lim its If any limit mentioned above is violated 20 mA is applied o...

Страница 99: ...l OP ID Option Description 1 Interval default Measurements are initiated in a specified interval 2 TRIG input Measurements are triggered by the positive edge of a DC voltage signal applied to the TRIG...

Страница 100: ...nt During this time the ultrasonic signal is recorded and the dis tance to the monitored surface calculated Generally a measurement duration of 6 s is recom mended Value range Default Units 2 20 6 s A...

Страница 101: ...tive These settings include precipitation detection and snowfall limits see Status limits and Advanced settings Rate of change filtering RoC max without precip h and RoC max at precip h is active 2 wa...

Страница 102: ...pikes the mean value is calculated without the 5 lowest buffered values If the buffer size is smaller than 10 half of the values are eliminated 3 maximum The highest value from the buffer is returned...

Страница 103: ...85 Port 117 D A Language Sprache generic language The menu language ID Option Description 1 german deutsch German language 2 english englisch default English language D B Decimal character generic dec...

Страница 104: ...t 105 D D D Temperature decimals 105 D D A Level unit generic units level The following units of the level distance can be selected ID Option Description 1 mm default Millimeter 2 cm Centimeter 3 m Me...

Страница 105: ...cimal places for the measured air temperature Value range Default Units 0 6 2 D E Temperature D E A Offset 105 D E B Adjustment 105 D E C Test 106 D E A Offset generic temperature offset Offset of the...

Страница 106: ...4 mA value 108 D F H IOUT2 status hold time 108 D F I Simulate current output 109 D F A Status generic analog out status The status defines the behavior of the analog outputs ID Option Description 1 o...

Страница 107: ...ffset of 0 cm and a level span of 400 cm To interpret the output more easily select a span value of 480 cm thus a current of 1 mA corresponds to a level of 30 cm Value range Default Units 9 999 999 99...

Страница 108: ...pitation limit is exceeded and the tem perature is below Snowfall max temperature 6 status all lim its If any limit mentioned above is violated 20 mA is applied otherwise 0 mA D F F IOUT2 temperature...

Страница 109: ...elected current is also applied to the analog outputs and can be read with a connected data logger or multimeter By pressing Return Enter again the simulation stops NOTE If Status is deactivated no cu...

Страница 110: ...ree surface and Snow settling strength drop falls below its limit the status snow settling is set to high Once the maximum level is reached the status is set to low again Value range Default Units 0 9...

Страница 111: ...K Sommer ID 114 D H A Optimisation ush optimisation Only available if Application is set to water or others Adapts the settings of the level distance ana lysis to the conditions of the sensors environ...

Страница 112: ...n ush max standard deviation At the beginning of each measurement the USH 9 fires an impulse to detect the approximate position of the snow surface Subsequent impulses then determine the exact snow de...

Страница 113: ...h conditions At monitoring sites with frequent drifting snow consider to increase RoC max without precip h D H H Precipitation filter duration ush precipitation filter duration Only available if Appli...

Страница 114: ...rates but increases power consumption 2 MODBUS slow For MODBUS applications The USH 9 goes into idle mode and can be woken up by a command via the RS 485 interface with a low baud rate This option red...

Страница 115: ...y The system key defines the bus system of the device Thus different conceptual bus systems can be separated Interfering bus systems occur if the remote radio coverage of two measurement systems overl...

Страница 116: ...ocol information The main measurement values are always included in the data output string Additionally special and analysis values can be included ID Option Description 1 main values Only the main va...

Страница 117: ...efines the time delay between the prefix and the data string Value range Default Units 0 5 000 300 ms D I H MODBUS set default generic rs 485 protocol modbus set default Only available in terminal mod...

Страница 118: ...lected ID Option Description 1 1 200 2 2 400 3 4 800 4 9 600 default 5 19 200 6 38 400 7 57 600 8 115 200 D J B Parity stop bits generic rs 485 port parity stop bits The following combinations of pari...

Страница 119: ...fore data is sent Value range Default Units 0 2 000 10 ms D J E Flow control generic rs 485 port flow control The XOFF XON flow control can be activated with this setting ID Option Description 1 Off d...

Страница 120: ...Relaunch program 121 E A Device status generic special functions device status Displays information about the sensor and the software version E B View setup generic special functions view setup All p...

Страница 121: ...functions temp load factory default Loads factory default values temporarily Only available in terminal mode E F Relaunch program generic special functions relaunch program The device is restarted Pow...

Страница 122: ...85 interface is out of bounds 0x00000010 SYSTEM_PRIMADC_NOXREF_ERROR Power supply of AD converter that reads the Pt1000 output is out of bounds 0x00000020 SYSTEM_PRIMADC_BAD_SW_ERROR Obsolete 0x000000...

Страница 123: ...TEM_NO_TARGET_ CLEARANCE May only occur during outdoor use Spread of distance acquired by confirmation shots is too large 0x10 SYSTEM_DIFFERENT_ MIRRORING May only occur during indoor use If three ult...

Страница 124: ...SDI 12 128 B 4 1 Data logger receives no SDI 12 data 128 B 4 2 The USH 9 is not detected by a SDI 12 master device 128 B 5 Analog output 129 B 5 1 The 4 20 mA output is wrong 129 B 1 Devices B 1 1 Th...

Страница 125: ...ion assistant or adapt port settings on your device NOTE Sommer Messtechnik devices require the following Baud rates Sensor 9600 Data logger 115200 Modbus 19200 In case of doubt use the function Check...

Страница 126: ...flict Reboot the device by interrupting the power supply B 2 2 Snow height increase is retarded Reason Solution Drifting snow has resulted in a fast change of the snow height Increase RoC max without...

Страница 127: ...an old version Cause Solution The device has been con nected to the same PC before and several different setup files have been loaded Delete the setup files of the device that have been downloaded by...

Страница 128: ...ore sensors have the same SDI 12 address If multiple sensors are connected to the same data logger each sensor must be assigned a unique SDI 12 address Some third party sensors may not issue a ser vic...

Страница 129: ...ut and verify the correct output Sensor and data acquisition system have dif ferent grounds Verify that sensor and data acquisition system have the same ground The 4 20 mA output is delayed by approx...

Страница 130: ...6 0x5ED5 0x4EF4 0x3E13 0x2E32 0x1E51 0x0E70 18 0xFF9F 0xEFBE 0xDFDD 0xCFFC 0xBF1B 0xAF3A 0x9F59 0x8F78 19 0x9188 0x81A9 0xB1CA 0xA1EB 0xD10C 0xC12D 0xF14E 0xE16F 20 0x1080 0x00A1 0x30C2 0x20E3 0x5004...

Страница 131: ...connecting industrial electronic devices R RS 485 A standard defining the signal trans mission in serial communication sys tems S SDI 12 Asynchronous serial com munications protocol for intelligent se...

Страница 132: ...Index M Modbus 17 53 54 79 80 86 88 115 117 125 R RS 485 12 13 16 17 21 22 26 35 51 53 62 64 71 74 80 88 99 114 116 117 119 122 127 S SDI 12 16 17 21 23 53 63 74 78 82 99 103 116 128 Manual 132...

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