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MAGX2 Modbus RTU User Guide -0- V1.3 12-11-2014
Contents
1. 2034 2033 Longint 20 Current Loop Calibration point 2 mA RW 2036 2035 Longint 0 5 1 5 Current Loop Calibration const 1 RW 2038 2037 Longint 0 5 1 5 Current Loop Calibration const 2 RW 2040 2039 Longint Voltage Output Setting Signal 0 Flow 1 Flow 2 Error 3 Air detector 4 Fixed 5 Direct driving 6 OFF RAN 2042 2041 Longint 36 000 Flow min m3 h RAN 2044 2043 Longint 36 000 Flow max m3 h RAN 2046 2045 Longint Voltage min V RAN 2048 2047 Longint Voltage max V RW 2050 2049 Longint Relay 1 Setting Signal 0 OFF 1 Fixed 2 Flow 3 Flow 4 Error 5 Air Detect 6 On In 7 On Out 8 On lt F1 9 gt 1 RAN 2052 2051 Longint Relay 2 Setting Signal 0 OFF 1 Fixed 2 Flow R W MAGX2 Modbus RTU User Guide 13 V1 3 12 11 2014 3 Flow 4 Error 5 Air Detect 6 On In 7 On Out 8 On F1 9 On gt F1 2054 2053 Longint 36 000 Flow 1 m3 h RAN 2056 2055 Longint 36 000 Flow 2 m3 h RW 2058 2057 Longint 36 000 Hysteresis 1 m3 h RW 2060 2059 Longint 36 000 Hysteresis 2 m3 h RW 2062 2061 Longint Relay 3 Setting
2. If start address is not the start of a mapped holding register gt Exception 2 Illegal data address Writing to holes is not allowed gt Exception 2 Illegal data address If the end address is only part of a mapped holding register item e g one half of a longint value the action depends on the datatype If the end address is only part of a mapped holding register item e g one half of a longint value gt Exception 2 Illegal data address Function code 17 Report Slave ID There are no exceptions for this function MAGX2 Modbus RTU User Guide 6 V1 3 12 11 2014 5 Modbus holding registers Below the holding registers for the MAGX2 Modbus RTU module are described SES I 580090 2 Password 100 Real time measurement 1000 Info 1500 Display 2000 User settings 3000 Service settings 4000 Factory settings 5000 Authorize 10000 Datalogger Holding registers memory map When writing to the Holding registers data validity is not checked Writing incorrect values can result in unexpected behaviour of the device In any further explanations the following data types are used Longint Number consisting of 32 bits formed by 2 Modbus registers It is necessary to write both Low and High Word of this item the register number always has to be an even number Not meeting these requirements will cause an Exception 2 error Illegal data address In case information about the numbe
3. see chapter User Setting Menu Voltage Output in MAGX2 manual Flow min see chapter User Setting Menu Voltage Output in MAGX2 manual Flow max see chapter User Setting Menu Voltage Output in MAGX2 manual Voltage min see chapter User Setting Menu Voltage Output in MAGX2 manual Voltage max see chapter User Setting Menu Voltage Output in MAGX2 manual Relay 1 setting see chapter User Setting Menu Pulse Output in MAGX2 manual Relay 2 setting see chapter User Setting Menu Pulse Output in MAGX2 manual Flow 1 see chapter User Setting Menu Pulse Output in MAGX2 manual Flow 2 see chapter User Setting Menu Pulse Output in MAGX2 manual Hysteresis 1 see chapter User Setting Menu Pulse Output in MAGX2 manual Hysteresis 2 see chapter User Setting Menu Pulse Output in MAGX2 manual Relay 3 setting see chapter User Setting Menu Pulse Output in MAGX2 manual Relay 4 setting see chapter User Setting Menu Pulse Output in MAGX2 manual Volume plus see chapter User Setting Menu Pulse Output in MAGX2 manual Volume minus see chapter User Setting Menu Pulse Output in MAGX2 manual Dose Batch see chapter User Setting Menu Pulse Output in MAGX2 manual Frequency setting see chapter User Setting Menu Frequency Output in MAGX2 manual Flow 1 see chapter User Setting Menu Frequency Output in MAGX2 manual Flow 2 see chapter User Setting Menu Frequency
4. Signal 0 OFF 1 ON 2 Flow 3 Flow 4 Error 5 Air Detect 6 Pulse Litre 7 Pulse Litre 8 Dosing R W 2064 2063 Longint Relay 4 Setting Signal 0 OFF 1 ON 2 Flow 3 Flow 4 Error 5 Air Detect 6 Pulse Litre 7 Pulse Litre 8 Dosing R W 2066 2065 Longint 99 999 Pulse Litre I R W 2068 2067 Longint 99 999 Pulse Litre I RAN 2070 2069 Longint 99 999 Dose Batch I RAN 2072 2071 Longint Frequency Settings Signal 0 OFF 1 Fixed 2 Flow 3 Flow 4 Error 5 Air Detect 6 Direct Driving RAN 2074 2073 Longint 36 000 Flow 1 m3 h RAN 2076 2075 Longint 36 000 Flow 2 m3 h RAN MAGX2 Modbus RTU User Guide 14 V1 3 12 11 2014 2078 2077 Longint 1 000 Frequency min Hz RAN 2080 2079 Longint 1 000 Frequency max Hz RAN 2082 2081 Longint 99 Duty Cycle R W 2084 2083 Bool 1 Load Default Settings R W 2086 2085 Longint 31 129 999 Date Settings RAN 2088 2087 Longint 235959 Time Settings RAN 2090 2089 Longint 9 999 User Password RAN Modbus Slave 2092 2091 Longint 247 Address RAN Modbus Baudrate 0 4800 2094 2093 Longint 3 1 9600 RW 2 19200 3 38400 Parity 0 Even 1stopbit 2096 2095 Lon
5. 3 and 16 are used for accessing registers Function code 17 report slave ID will return a structure of identification information of the device Below the different function code exceptions are described Function code 3 Read holding registers General exceptions Requesting less than 1 or more than 125 registers gt Exception 3 Illegal data value Requesting more than max message size gt Exception 2 Illegal data address Requesting data above crossing limitation of max register address OxFFFF gt Exception 2 Illegal data address If the end address is only part of a mapped holding register item e g one half of a longint value gt Exception 2 Illegal data address Application exceptions Application errors gt Exception 2 Illegal data address Holes register alignment The read command always returns data if no exception is given Bad start end alignment will result in only parts of the data item being read Holes in the holding register map return Exception 2 Illegal data address Function code 16 Write multiple registers General exceptions Exceeding max message size gt Exception 2 Illegal data address Writing data above crossing limitation of max register address OxFFFF gt Exception 2 Illegal data address Application exceptions Application errors gt Exception 2 Illegal data address Application errors include writing to ReadOnly holding registers Holes register alignment
6. Output in MAGX2 manual Frequency 1 see chapter User Setting Menu Frequency Output in MAGX2 manual Frequency 2 see chapter User Setting Menu Frequency Output in MAGX2 manual Duty cycle see chapter User Setting Menu Frequency Output in MAGX2 manual Load default settings Load default factory setting or users changing setting on function Save setting Date Settings date write in BCD format YYYYMMDD i e 25 03 2010 hex 0x20100325 Time Settings time write in BCD format HHMMSS i e 08 33 15 hex 0x00083315 MAGX2 Modbus RTU User Guide 18 V1 3 12 11 2014 Password Setup Set password user Modbus Slave Address Modbus device address Default 1 Modbus Baudrate setup communication speed Default 9600 Modbus Parity setup communication parameters Default Even 1 stopbit Electrode Cleaning Set electrode cleaning Clean Time number of seconds how long run electrode cleaning when select On Start or Start Now Start Now If set start electrode cleaning now for Clean Time Totalizer Cycling If set each 3 seconds change totalizer on Main screen GSM Data Interval For more info see GSM SMS Module Specification chapter Set Sending Interval Reference 4 GSM Phone 1 H GSM Phone 2 H GSM Phone 3 H High part of phone number i e 4207 for phone number 420777123456 Do not enter character The character is added automatically All phone numbers must be in internat
7. sends out a request to address 0 which means that the information is for all slave devices on the network In Broadcast mode there is no response from the slave devices UNICAST MODE The Modbus frame is shown below and is valid for both requests and responses SLAVE ADRESS FUNCTION CODE DATA CRC 1 Byte 1 Byte 0 252 Bytes 2 Bytes Further details of the Modbus protocol can be found in Reference 1 and 2 MAGX2 Modbus RTU User Guide 4 V1 3 12 11 2014 3 Commissioning Before communicating with the master Baud rate slave ID and Parity must be selected This can be done from the display Please look at into the MAGX2 transmitter manual to locate the Modbus menu see Reference 3 Comments Slave address 1 247 Device address Factory setting 1 Communication speed Factory setting Baud rate 4800 9600 19200 38400 9600 Even 1 stopbit Odo ul 800801 Communication parameters Factory None 2 stopbit setting Even 1 stopbit Parity framing None 1 stopbit MAGX2 Modbus RTU User Guide 5 V1 3 12 11 2014 4 Modbus addressing module The module allows R W access to the following standard Modbus data register blocks Holding registers l e the module will not support the other standard data register blocks Coils Discrete input Input registers 4 1 Modbus function codes This device supports following function codes 3 16 and 17 Function code
8. User Guide 22 V1 3 12 11 2014 5 8 Authorize Modbus Modbus No of No of n Read register address bytes Data type decimal Min Value Max Value Description Write 5000 4999 4 Longint 0 0 gogg 595 Password pay Setup Password Setup Set password user MAGX2 Modbus RTU User Guide 23 V1 3 12 11 2014 5 9 Datalogger C I b Hero MU Data type Min Value Max Value Description deca 10000 9999 4 Longint 0 0 99991231 Request Date RAN 10002 10001 4 Longint 0 0 235959 Request Time RAN 10004 10003 4 Longint 0 0 235959 Datalogger R 10006 10005 4 Longint 0 0 235959 ae R 10008 10007 4 Longint 0 0 235959 Total DIG R 10010 10009 4 Longint 0 0 235959 Total DEC R 10012 10011 4 Longint 0 0 235959 Total DIG R 10014 10013 4 Longint 0 0 235959 Total DEC R 10016 10015 4 Longint 0 0 235959 Error min R 10018 10017 4 Longint 0 0 235959 Error R Request Date Date which is needed to read from datalogger Request Time Time which is needed to read from datalogger Datalogger Date date of datalogger record Datalogger Time time of datalogger record Total DIG Positive totalizer integral fraction Total DEC Positive totalizer decimal fraction always 3 decimal numbers i e 25 0 025 Total DIG Negative totalizer integral fraction Total DEC Negative totalizer decima
9. apsibesbecsbetanes shebssdestousnep ke 9 SS INFO sg TRE IPIE E DRE ORO AEN DAP NO Eie tees 10 11 5 53 USER SETTINGS 5 ie Re ae 12 5 60 SERVICE SETTINGS an NR NE 20 23 FACTORY SETTINGS spre i res ras 21 2 8 AUTHORIZE one 23 5 9 DATALOGGER is ert 24 6 25 2 Modbus RTU User Guide 1 V1 3 12 11 2014 1 Introduction This manual describes the MAGX2 Modbus RTU communication protocol 1 1 Definitions and Abbreviations CRC Cyclic Redundancy Check Used for error checking in Modbus RTU See appendix Modbus master A Modbus device which is able to access data in one or more connected Modbus slaves Modbus slave Modbus device which is able to respond to requests from a single Modbus master Modbus address Throughout this document the following notation is used to address Modbus RTU registers 1234 Holding register 1234 addressed in messages by 1233 Refers to the communication standard defined by EIA TIA 232C Physical layer EIA TIA232C Refers to the USB Specification usb org Refers to the 2 wire communication standard defined by EIA TIA 485 Physical layer Remote Terminal Unit Standard Modbus transmission mode Modbus over Serial Line Specification amp Implementation guide v 1 0 Modbus org 12 02 02 Modbus Application Protocol Specificati
10. arkon systems TRANSMITTER Service Fact Aut RE Www arkon co uk REMOVING any MODULES FAY Arkon Flow Systems P izova 1 3 602 00 Brno Czech Republic Tel 420 543 214 822 Tel Fax 420 543 215 249 Enquiries Orders General questions office arkon co uk Marketing support Brochures marketing arkon co uk Technical support support arkon co uk www arkon co uk List of Contents L Io b 601 O04 H Os Suet 2 1 1 DEFINITIONS 4 4 4 4 4 6 6 6 6 6 6 6 6060 606 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 2 T 2 REFERENGES M 2 2 TECHNICAL DATA ent NIS M tm 3 2 GENERAL MODBUS Seas Rope BAS AE REPRE BAUS AS Rs RAR eA 4 3 COMMISSIONING u l 2 ES 5 4 MODBUS ADDRESSING MODULE 6 4 MODBUS FUNCTION CODES 7 090 6 5 MODBUS HOLDING REGISTERS 7 S EPASSWORD nae Dn te rae ede qe a eb C 8C C C 8 5 2 REAL TIME MEASUREMENT sscssstesveestepsieessteseotsbesstescedesvebsoepebsessopbavtstepcayasssesunbss
11. ateWay6 R W 2144 2143 Longint OxFFFFFFFF GPRS_GateWay7 RAN 2146 2145 Longint OxFFFFFFFF GPRS GateWay8 R W 2148 2147 Longint OxFFFFFFFF GPRS_GateWay9 R W 2150 2149 Longint OxFFFFFFFF GPRS GateWay10 RW 2152 2151 Longint OxFFFFFFFF GPRS_GateWay11 R W 2154 2153 Longint OxFFFFFFFF GPRS GateWay12 RAN 2156 2155 Longint OxFFFFFFFF GPRS GateWay13 RAN 2158 2157 Longint OxFFFFFFFF GPRS GateWay14 RAN MAGX2 Modbus RTU User Guide 16 V1 3 12 11 2014 2160 2159 Longint OxFFFFFFFF GPRS GateWay15 R W 2162 2161 Longint OxFFFFFFFF GPRS UserO RAN 2164 2163 Longint OxFFFFFFFF GPRS User1 R W 2166 2165 Longint OxFFFFFFFF GPRS User2 RAN 2168 2167 Longint OxFFFFFFFF GPRS PasswordO RAN 2170 2169 Longint OxFFFFFFFF GPRS Password1 RAN 2172 2171 Longint OxFFFFFFFF GPRS Password2 RAN 2174 2173 Longint 1 024 GPRS Port RAN 2176 2175 Longint 9 999 GPRS PIN RW Measurement 0 Stop the unit shows actual flow but the totalizers are stopped 1 Running totalizers are active Default Stop Datalogger Interval this function selects how often data is written to the datalogger CSV Format Set separator between each data Set comma or semicolon Air Detector this option allows selecting empty pipe check Default OFF Air Constant constant value to determine the Empty pipe detection limit Default 188 Delete Aux Volume write value different to zero for
12. easurement 0 Run 1 Stop RAN 2002 2001 Longint Datalogger Interval 0 OFF 1 1min 2 5min 3 10min 4 15min 5 30min 6 1h 7 2h 8 6h 9 12h 10 24h RAN 2004 2003 Longint CSV Format 0 Coma 1 Semicolon RAN 2006 2005 Longint Air Detector 0 OFF 1 ON RAN 2008 2007 Longint 0 999 Air Constant RW 2010 2009 Bool Delete Auxiliary Volume RW 2012 2011 Longint 120 Start Delay s RW 2014 2013 Longint 120 60 Samples per Avg RW 2016 2015 Longint Low Flow Cutoff 0 0 5 1 1 2 2 3 5 4 10 5 OFF RAN 2018 2017 Longint 36 000 Flow Qn m3 h RAN 2020 2019 Longint Invert Flow 0 No invert 1 Invert RAN 2022 2021 Longint Current Loop Setting Signal 0 Flow 1 Flow 2 Error 3 Air detector 4 Fixed RAN MAGX2 Modbus RTU User Guide 12 V1 3 12 11 2014 5 Direct driving 6 OFF 2024 2023 Longint 36 000 Flow min m3 h RW 2026 2025 Longint 36 000 Flow max m3 h RW 2028 2027 Longint 20 Current min mA RW 2030 2029 Longint 20 Current max mA RW 2032 2031 Longint 20 Current Loop Calibration point 1 mA RW
13. erasing the auxiliary flow totalizer Start Delay Value represent how long is stabilize all component actual flow is 0 at this time Samples per Avg the number of samples that the flowmeter will use for calculation of its displayed average flow value Default 15 Maximal value for sensor v 8 and later is 120 and for sensor v 7 is 60 Low Flow Cutoff this function serves to set the minimum flow the flowmeter will react on Default 296 Flow Qn set nominal flow automatic set if changing the diameter Invert Flow this function serves to change the direction of the flow Default No invert Current Loop Setting see chapter Current Loop in MAGX2 manual Flow min see chapter User Setting Menu Current Loop in MAGX2 manual Flow max see chapter User Setting Menu Current Loop in MAGX2 manual Current min see chapter User Setting Menu Current Loop in MAGX2 manual Current max see chapter User Setting Menu Current Loop in MAGX2 manual Current Loop Calibration point 1 see chapter User Setting Menu Current Loop in MAGX2 manual MAGX2 Modbus RTU User Guide 17 V1 3 12 11 2014 Current Loop Calibration point 2 see chapter User Setting Menu Current Loop in MAGX2 manual Current Loop Calibration constant 1 see chapter User Setting Menu Current Loop in MAGX2 manual Current Loop Calibration constant 2 see chapter User Setting Menu Current Loop in MAGX2 manual Voltage output Setting
14. ersed to binary format where each bit represent specific error See MAGX2 manual MAGX2 Error Code Table MAGX2 Modbus RTU User Guide V1 3 12 11 2014 5 3 Info Modbus Modbus No of No of Min Read register address bytes pata type decimal Value Max value Description Write 1000 999 4 Longint 0 Unit No R 1002 1001 4 Longint 0 Sensor Unit No R 1004 1003 4 Longint 0 2 Error min R 1006 1005 4 Longint 0 x x OK min R 1008 1007 4 Longint 0 Diameter mm R 1010 1009 4 Longint 3 Flow Qn m3 h R 1012 1011 4 Longint 2 8 FirmWare No R 1014 1013 4 Longint 0 Actual Error R Power Frequency 1016 1015 4 Longint 0 R Hz SD Card Present 1018 1017 4 Longint 0 0 1 O No R 1 Yes GSM Module present 1020 1019 4 Longint 0 0 1 0 No R 1 Yes 1022 1021 4 Longint 0 0 Oxffffffff GPRS IP Address R 1024 1023 4 Longint 0 0 100 GSM Signal R Unit no unique number for each Flowmeter If there are any problems please refer to this number Error min the number of minutes the device was measuring with some error OK min the number of minutes that the device measured correctly Diameter mm the nominal sensor diameter Flow Qn m3 h nominal flow Firmware No this item shows the current firmware version Actual Error Actual error is represented in Hex format For decode it has to be converted to b
15. gint 3 1 Odd tstopbit R W 2 None 2stopbits 3 None 1stopbit Electrode Cleaning 0 2098 2097 Longint 2 RW 1 2 ON Start 2100 2099 Longint 9999 Clean Time s R W 2102 2101 Bool 1 Start Now R W Totalizer Cycling 2104 2103 Longint 1 0 ON RAN 1 OFF 2106 2105 Longint 50000 Pala RAW 2108 2107 Longint 99999999 GSM Phone 1 High R W 2110 2109 Longint 99999999 GSM Phone 1 Low R W 2112 2111 Longint 99999999 GSM Phone 2 High RAN 2114 2113 Longint 99999999 GSM Phone 2 Low RW 2116 2115 Longint 99999999 GSM Phone High RW 2118 2117 Longint 99999999 GSM Phone Low RW MAGX2 Modbus RTU User Guide 15 V1 3 12 11 2014 GSM Empty Pipe Event 2120 2119 Longint 1 0 RAN 12 ON GSM Zero Flow Event 2122 2121 Longint 1 0 OFF RAN 1 ON GSM Error Detect Event 2124 2123 Longint 1 0 OFF RAN 1 ON GSM Empty Pipe 2126 2125 Longint 1 Eveni Seung RW 9 0 ON and OFF 1 Only ON GSM Empty Pipe 2128 2127 Longint 1 Even Seuings RW 9 0 1 Only ON 2130 2129 Longint OxFFFFFFFF GPRS GateWayO RAN 2132 2131 Longint OxFFFFFFFF GPRS GateWay1 RAN 2134 2133 Longint OxFFFFFFFF GPRS GateWay2 R W 2136 2135 Longint OxFFFFFFFF GPRS GateWay3 RAN 2138 2137 Longint OxFFFFFFFF GPRS GateWay4 RAN 2140 2139 Longint OxFFFFFFFF GPRS GateWay5 RAN 2142 2141 Longint OxFFFFFFFF GPRS G
16. inary format where each bit represent each error See MAGX2 manual MAGX2 Error Code Table MAGX2 Modbus RTU User Guide 10 V1 3 12 11 2014 Power Frequency Frequency of power network SD Card Present Value represent if SD card is present 0 not 1 is present GSM Module present Value represent if GSM Module is present 0 not 1 is present Reference 4 GPRS IP Address Actual IP address of GPRS module GSM Signal Signal strength of GSM module Reference 4 5 4 Display Modbus Modbus No of No of Min Read register address bytes Data type decimal Value Velle Deseription Write Unit Flow 0 UKG min 1500 1499 4 Longint 0 4 1 USG min R W 2 m3 h 3 l min 4 I 5 Unit Volume 0 UKG 1502 1501 4 Longint 0 3 1 USG R W 2 m3 3 l Unit Temperature 0 C 1 2 F 1504 1503 4 Longint 0 1 R W Language 1506 1505 4 Longint 0 1 0 ENG R W 1 SPA 1508 1507 4 Longint 0 100 Contrast 96 R W Unit Flow actual flow unit default m h Unit Volume totalizer unit default m Language Language of transmitter menu Contrast Set display s contrast MAGX2 Modbus RTU User Guide 11 V1 3 12 11 2014 5 5 User settings Modbus register Modbus address No of bytes Data type No of decimal Min Value Max Value Description Read Write 2000 1999 Longint M
17. ional format i e 420123456789 For more info see GSM SMS Module Specification Reference 4 GSM Phone 1 L GSM Phone 2 L GSM Phone 3 L Low part of phone number i e 77123456 for phone number 420777123456 Reference 4 GSM Empty Pipe Event For more info see GSM SMS Module Specification Reference 4 GSM Zero Flow Event For more info see GSM SMS Module Specification Reference 4 GSM Error Detect Event For more info see GSM SMS Module Specification Reference 4 GSM Empty Pipe Event Settings For more info see GSM SMS Module Specification Reference 4 GSM Zero Flow Event Settings For more info see GSM SMS Module Specification Reference 4 MAGX2 Modbus RTU User Guide 19 V1 3 12 11 2014 5 6 Service Settings Modbus Modbus No of No of Min e Read register address bytes Data type decimal Value walte Description Write 3000 2999 4 Bool 0 1 Error Delete R W 3002 3001 4 Bool 0 1 OK Delete R W 3004 3003 4 Bool 0 1 Delete Volume R W 3006 3005 4 0 1 MOIS RAW Delete Volume 3008 3007 4 Bool 0 1 Total R W Flow simulation 3010 3009 4 Longint 0 0 1 0 ON 1 OFF R W 3012 3011 4 Longint 3 0 36000000 Simulated flow pyw m3 h Delete Error min write value different to zero for erasing the Error min counter Delete OK min write value different to zero for erasing the OK min coun
18. l fraction always decimal numbers i e 25 0 025 Error min the number of minutes the device was not measuring because of errors Error Error code for decode see MAGX2 manual MAGX2 Modbus RTU User Guide 24 V1 3 12 11 2014 6 Contact Technical support support arkon co uk Skype support arkon Sales office office arkon co uk Office hours 8 30 18 00 GMT 1 Direct technical support 8 00 16 30 GMT 1 MAGX2 Modbus RTU User Guide 25 V1 3 12 11 2014
19. ngint 0 1 0 ON 1 OFF RAN 4028 4027 4 Bool 0 1 Save Settings R W Diameter diameter of the sensor Unit No set serial number of the unit MAGX2 Modbus RTU User Guide 21 V1 3 12 11 2014 Calibration Point 1 calibration flow 1 CD1 Calibration data 1 CD2 Calibration data 2 CD3 Calibration data 3 CP1 Calibration point 1 CP2 Calibration point 2 Calibration Point 2 calibration flow 2 Calibration Point 3 calibration flow 3 Calibration Data 1 calibration data 1 CP3 Calibration point 3 ADC data data from AD converter Calibration Data 2 calibration data 2 Calibration Data 3 calibration data 3 Note CP1 CP3 CP2 and CD1 CD3 CD2 The calibration point 3 and the calibration data 3 could be set to zero CP1 CP2 and CD1 CD3 Zero Flow after activation this function average value from ADC converter number of samples for average is value of Samples per Average Zero Flow Constant Set manually value for zero flow constant Zero Flow Erase erase zero flow constant Excitation Frequency choose the excitation frequency Excitation write zero for turn OFF the excitation Default ON Service Mode write value different to zero for turn ON the service mode Default OFF Save Settings Save setting to battery backed up RAM next time will be load with Load Default Settings function MAGX2 Modbus RTU
20. on v 1 1 Modbus org 12 06 02 MAGX2 Modbus RTU User Guide MAGX2 manual 2 V1 3 12 11 2014 2 Technical data ARKON Flowmeter Modbus RTU specification Slave 4800 9600 19200 38400 bits sec Number of stations Recommended Device address range 1 247 Protocol Modbus RTU Other Modbus protocols like ASCII Plus or TCP IP are not supported max 31 per segment without repeaters Electrical interface RS232 RS485 2 wire USB TCP IP Bluetooth 3 read holding registers Supported function code 16 write multiple registers 17 report slave ID Broadcast No Maximum cable length Reference 3 Standard Modbus over serial MAGX2 Modbus RTU User Guide 3 V1 3 12 11 2014 2 1 General Modbus RTU The module complies with the Modbus serial line protocol Reference 1 Among other things this implies a master slave protocol at level 2 of the OSI model One node the master issues explicit commands to one of the slave nodes and processes responses Slave nodes will not transmit data without request from the master node and do not communicate with other slaves Modbus is a mono master system which means that only one master can be connected at any single point in time Two modes of communication are possible Unicast and Broadcast Unicast mode is where the master sends a request to one slave device and waits a specified time for a response In Broadcast mode the master
21. r of decimals is available then the final number is given by the following formula Y X 104 DEC where Y is the final number X the read number and DEC the number of decimals Bool this item can be read but its value has no meaning Writing value 1 to this item will cause an unspecified operation to be performed erasing the Memory module resetting the flow totalizers etc Reference 3 It is necessary to write both Low and High Word of this item the register number always has to be an even number Not meeting these requirements will cause an Exception 2 error Illegal data address Modbus Data Low High register Type Word 2 L Longint 3 H 4 L Lin H Data type memory map MAGX2 Modbus RTU User Guide 7 V1 3 12 11 2014 5 1 Password To enter the User settings Service settings Factory settings and Authorize sections it is necessary to enter a password in the same way as for the MAGX2 flowmeter menu see reference 3 Modbus Modbus No of No of 7 Read register address bytes Data type decimal Value Descripson Write 2 1 4 Longint 0 0 9999 Password User R W 4 3 4 Longint 0 0 9999 Password Service R W 6 5 4 Longint 0 0 9999 Password Factory R W 8 7 4 Longint 0 0 9999 Password Authorize R W For safety purposes it is not possible to read this item directly In case a 0 is read from this register i
22. t means that no valid password was entered and the given section is not accessible In case a 1 is read a valid password was entered and hence the given section can be accessed freely To close the section you write any possible invalid password to the password entry Password User default user password 1111 MAGX2 Modbus RTU User Guide 8 V1 3 12 11 2014 5 2 Real time measurement Bird Ades bs Data type d Valde Max Valle Desenpuon wie 100 99 4 Longint 3 10 7 10 7 FLOW R 102 101 4 Longint 0 0 2 32 TOTAL R 104 103 4 Longint 6 0 2 32 TOTAL DEC R 106 105 4 Longint 0 0 2 32 AUX R 108 107 4 Longint 6 0 2 32 AUX DEC R 110 109 4 Longint 0 0 2 32 TOTAL R 112 111 4 Longint 6 0 2 32 TOTAL DEC R 114 113 4 Longint 0 0 2 32 TOTAL R 116 115 4 Longint 6 0 24 32 TOTAL DEC R 118 117 4 Longint 1 0 2 32 TEMP R 120 119 4 Longint 8 0 OxFFFFFFFF Actual Error R The final number is given by the sum of the whole and the decimal Example Resulting Total measurement TOTAL TOTAL DEC 10 3 Flow Unit m3 h it is not possible to change it Real value Actual value divided by 1000 TOTAL TOTAL TOTAL AUX Unit m it is not possible to change it Real value Actual value divided by 1000 Temp Real value Actual value divided by 10 Actual Error Actual error is represented in Hex format For decode it has to be conv
23. ter Delete Total Volume write value different to zero for erasing the Total flow totalizer Delete Total Volume write value different to zero for erasing the Total flow totalizer Delete Total Volume write value different to zero for erasing the Total flow totalizer Flow Simulation switch off on the simulation flow function Default OFF Simulated Flow write simulated flow MAGX2 Modbus RTU User Guide 20 V1 3 12 11 2014 5 7 Factory Settings Modbus Modbus No of No of 1 5 Read register address bytes Data type decimal Min Value Max Value Description Write 4000 3999 4 Longint 0 10 1 000 L Diameter RAN 4002 4001 4 Longint 0 0 9 999 999 Unit No RAN Calibration 4004 4003 4 Longint 3 0 015 36 000 000 Pointi RAN Calibration 4006 4005 4 Longint 3 0 015 36 000 000 5 RAN Point2 Calibration 4008 4007 4 Longint 3 0 015 36 000 000 5 RAN Point3 4010 4009 4 Longint o 10000000 10000000 NM RW 4012 4011 4 Longint o 10000000 10000000 Calibration RW Data2 4014 4013 4 Longint o 10000000 10000000 RW 4016 4015 4 Bool 0 1 Zero Flow RAN Zero Flow 4018 4017 4 Longint 0 10000000 10000000 Constant R W 4020 4019 4 Bool I 0 1 RAW Erase Excitation frequency 4022 4021 4 Longint 0 1 0 3 125Hz RAN 1 6 250Hz Excitation 4024 4023 4 Longint 0 1 0 ON 1 OFF RAN Service Mode 4026 4025 4 Lo
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