Communication Protocols for LRF-2000S(M)
Contents
1. For example 0512H stands Auto save on 12 00 on 5 0012H for 12 00 on everyday Key to input INTEGER Writable Go to Window INTEGER Writable LCD Back lit lights for number of seconds INTEGER Writable In unit second 0062 Times for the beeper INTEGER Writable Max 255 0062 Pulses left for OCT INTEGER Writable Max 65535 0072 Error Code BIT 16bits see note 4 0077 0078 0079 0080 PT100 resistance of inlet PT100 resistance of outlet REAL4 In unit Ohm In unit Ohm YOUR FLOW MEASUREMENT EXPERT www ultrasonicscn com 0081 0082 2 Total travel time REAL4 In unit Micro second 0083 0084 2 Delta travel time REAL4 In unit Nino second 0085 0086 2 Upstream travel time REAL4 In unit Micro second 0087 0088 2 Downstream travel time REAL4 In unit Micro second 0089 0090 2 Output current REAL4 In unit mA 0092 1 Working step and INTEGER The high byte is the step and low for Signal Quality signal quality range 00 99 the larger the better 0093 1 Upstream strength INTEGER Range 0 2047 0094 1 Downstream strength INTEGER Range 0 2047 0096 1 Language used in user interface INTEGER Oe Brels Chinese Other language will be supported later 0097 0098 2 The rate of the measured travel REAL4 Normal 100 3 time by the calculated travel time 0099 0100 2 Reynolds number REAL4 0101 0102 Pipe Reynolds2. Temperature difference REAL4 Unit C 0183 0184 2 flow for period of last power REAL4 Unit Cubic Meter 0185 0186 2 Clock coefficient REAL4 Should less than 0 1 0187 0188 2 Total time for Auto Save REAL4 Time to save by 0056 0189 0190 2 POS flow for Auto Save REAL4 Time to save by 0056 0191 0192 2 Flow rate for Auto Save REAL4 Time to save by 0056 0221 0222 2 Inner pipe diameter REAL4 In millimeter 0229 0230 2 Upstream delay REAL4 In microsecond 0231 0232 2 Downstream delay REAL4 In microsecond 0233 0234 2 Calculated travel time REAL4 In microsecond 0257 0288 32 LCD buffer BCD 0289 1 LCD buffer pointer INTEGER 0311 2 Worked time for today LONG Unsigned in seconds Worked time for this month LONG Unsigned in seconds Unit for flow rate INTEGER See note 5 Unit for flow totalizer INTEGER Range 0 7 see note 1 Multiplier for totalizer 1440 1 Multiplier for energy accumulator INTEGER Range 0 10 see note 1 INTEGER Range 0 7 see note 1 YOUR FLOW MEASUREMENT EXPERT www ultrasonicscn com Unit for energy rate INTEGER 0 GJ_ 1 Kcal 2 KWh 3 BTU Device address INTEGER User scale factor REAL4 Manufacturer scale factor REAL4 Read only Electronic serial number BCD High byte first Note 1 The internal accumulator is been presented by a LONG number for the integer part together with a REAL number for the decimal fraction In general uses only the intege
3. cr BA3 cr BAA cr BAS cr OCT and RELAY alarm signal te 4 TR s RL s cr HO Return the present date and time yy mm dd hh mm ss cr itn Send a key value as if a key is pressed is the key value Unlock the system Has nothing to do with the original password Lock the system Can be opened by press ENT key Select interface language X 0 for English 1 for Chinese 2 for Italy if applicable 3 for Korea if applicable 4 for French if applicable 5 for Germany if applicable 6 for Spanish if applicable Change baud rate X 0 7 will set to 19200 14400 octelose ooo S O crom oS RELAVOCT dae O SSS RELAY OCT open J S Force the FO to output a frequency of dddd Fdddd cr 1f HZ Output current a mA at the AO output AOa cr If Note 6 terminal Return the resistance for T1 d ddddddE dd cr 1f Return the resistance for T2 d ddddddE dd cr 1f Return current value of AI3 0 20mA d ddddddE dd cr 1f Return current value of AI4 0 20mA d ddddddE dd cr If Return current value of AIS 0 20mA d ddddddE dd cr If YOUR FLOW MEASUREMENT EXPERT www ultrasonicscn com AI5 cr Return temperature pressure value of AIS d ddddddE dd cr If Return the ESN electronic serial number of ddddddd cr If note 7 the flow meter Prefix of an IDN addressing based Note 8 networking The IDN address is byte range Prefix of any commands for returns with check sum Commands connector to make a Result comma
4. year in high 3604 Power on error code BIT B15 stand for corrected lost flow 3605 Power off second and minute BCD Second in low byte minute in high 3606 Power off hour and day BCD Hour in low byte day in high 3607 Power off month and year Power off error code BCD Month in low byte year in high B15 stand for corrected lost flow YOUR FLOW MEASUREMENT EXPERT www ultrasonicscn com 3609 3610 Flow rate when power on Flow rate after 60 seconds when power on 3611 3612 Flow rate when power off 3613 3614 2 Time duration when off In seconds 3615 3616 2 Corrected lost flow when In cubic meters off eo00000000 0080000000000 000000 0 3825 3840 The 32 data block 5 2 The FUJI extended communication protocol LRF 2000 is compatible with the LRF7 FUJI extended communication protocol which used in our previous Version7 ultrasonic flow meters This protocol is a set of basic commands that are in ASCII format ending with a carriage return CR and line feed LF For most of the commands The line feed LF should be better omitted for fast responding Data format 0 Returns flow rate per day 1 DOD cr Hote d ddddddE dd cr note DI cr Return positive totalizer 2 dddddddE d cr P Ote YOUR FLOW MEASUREMENT EXPERT www ultrasonicscn com BaudRateX cr Cl cr CO cr Rl cr RO cr FOdddd cr AOa cr BA1 cr BA2
5. T EXPERT www ultrasonicscn com interface RS232 RS485 baud rate 9600 by default select other 15 different baud rate by Menu 62 parity NONE EVEN ODD can be chosen from Menu 62 Data bits 8 Stop bits 1 2 In the following explanation XXh stands for the address or network ID of the instrument range 00h FFh YYh stands for the new address that will be assigned range 00h FFh ZZh the check sum which is obtained by means of binary addition of all the data bytes take notice to that the addition is for the data bytes not the controlling and commands bytes and the carry over Offh is discarded H stands for that the number is a hexadecimal number All five command are like following 1 read water meter data command 4A Format 2Ah XXh 4Ah Answer 26h XXh4Ah LL BCD coded ZZh In the above the contents of LL BCD are formatted as in the following table Position Content Bytes Note 1 4 Flow rate 4 The actual value is divided by 1000 unit in cubic meter per hour 5 8 Positive total flow 4 The actual value divided by 10 unit in cubic meter 9 12 Total time 4 Unit in hour 13 Error code 1 See table below 2 Reading the recorded meter data command 49 YOUR FLOW MEASUREMENT EXPERT www ultrasonicscn com Format 2Ah XXh 49h Answer 26h XXh49h LL BCD 43 ZZh The difference between the command 4A and command 49 is that the late command reads out the data which are recorded in the meter by the ti
6. YOUR FLOW MEASUREMENT EXPERT www ultrasonicscn com Communication Protocols LRF 2000 has an isolated serial port the RS485 LRF 2000 can support more than 4 different communication protocols by the same time include MODBUS ASCI ASCII RTU Meter BUS the Fuji Extended Protocol and more than 10 compatible communication protocols used by our flow meters MODBUS is a very commonly used industrial protocol Both the RTU and the ASCII format of MODBUS is supported The Fuji Extended Protocol is developed based on the protocol used in a Japanese ultrasonic flow meter It is totally compatible with that of Version 7 flow meter LRF 2000 can be used as a sample RTU terminal The 4 20mA output in the LRF 2000 can be used to open an analog proportional valve The OCT output can be used to control the turn on and turn off of other devices such as a pump The analog input can be used to input pressure or temperatures signals There is a programmable device address or ID number located at window M46 When LRF 2000 is used in a network all the parameters of the flow meter can be programmed through the network except the device address that needs the keypad At most occasions data should be obtained by polling the flow mete with a command the flow meter will respond with what the master asks LRF 2000 can also set to automatically output data at a period which is programmable The LRF 2000 also has a special command sets to facilitate the use of
7. ccumulator is the same as that of the day please refer to related paragrapho The difference is there are only 32 data blocks for the month accumulator and day variable always has a value of 0 REGISTER TABLE for the month accumulators Block No Register number Variable format note n a 0163 1 Data pointer for the month Integer Range 0 63 3329 1 Error Code BCD 3330 1 Month and year BCD Year in high byte 3331 3332 2 Total working time LONG 3333 3334 2 Net total flow for the REAL4 0 month 3335 3336 2 Net total energy for the REAL4 month 3337 1 Error Code BCD 3338 1 Month and year BCD Year in high byte 3339 3340 2 Total working time LONG 3341 3342 2 Net total flow for the REAL4 1 month 3343 3344 2 Net total energy for the REAL4 month 31 3577 3584 8 Data block No 31 3 There is no direct data for the year data for the year could be conducted from the data of the months YOUR FLOW MEASUREMENT EXPERT www ultrasonicscn com 5 1 3 REGISTER for power on and power off With every t power on and power off the new generation flow meter will record data about the time duration statue byte and the flow rate into a data block Every data block consists 32 bytes of data There are as many as 16 blocks of data can be recorded for 16 times of power on and 16 times of power off The data blocks are in a structure of loop queue The 16th data block will override the first block by de
8. ey value and a command M we can operate the flow meter through the network on a computer or other kind of terminals For example the command MO cr acts just like the zero key on the keypad was pressed Key Key value Key value ASCII key Key value Key value ASCII headecimal decimal headecimal decimal value value 0 30H 48 0 38H 56 8 1 31H 49 1 39H 57 9 2 32H 50 2 3AH 58 3 33H 51 3 lt 3BH 59 4 34H 52 4 MENU 3CH 60 lt 5 35H 53 5 ENT 3DH 61 6 36H 54 6 A 3EH 62 gt 7 37H 55 7 v 3FH 63
9. factor 0103 0104 Working Timer unsigned in second 0105 0106 Total working time unsigned in second 0105 0106 Total power on off time Unsigned 0113 0114 Net accumulator In Cubic Meter float 0115 0116 Positive accumulator In Cubic Meter float 0117 0118 Negative accumulator In Cubic Meter float 0119 0120 Net energy accumulator In GJ float 0121 0122 Positive energy accumulator In GJ float 0123 0124 Negative energy accumulator In GJ float 0125 0126 Flow for today In Cubic Meter float YOUR FLOW MEASUREMENT EXPERT www ultrasonicscn com 0127 0128 2 Flow for this month REAL4 in Cubie Meter Todt 0129 0130 2 Manual accumulator LONG 0131 0132 2 Manual accumulator decimal REAL4 fraction 0133 0134 2 Batch accumulator LONG 0135 0136 2 Batch accumulator decimal REAL4 fraction 0137 0138 2 Flow for today LONG 0139 0140 2 Flow for today decimal fraction REAL4 0141 0142 2 Flow for this month LONG 0143 0144 2 Flow for this month decimal REAL4 fraction 0145 0146 2 Flow for this year LONG 0147 0148 2 Flow for this year decimal fraction REAL4 0158 1 Current display window INTEGER 0165 0166 2 Failure timer LONG In unit second 0173 0174 2 Current output frequency REAL4 Unit Hz 0175 0176 2 Current output with 4 20mA REAL4 Unit mA 0181 0182 2
10. fault The location of the current block is presented in the data pointer The current power on data block is pointed by the decease by 1 of the pointer MODBUS registers table for the power on and power off Block No Register Variable Format Note n a 0164 Pointer Integer Range 0 31 3585 Power on second and minute BCD Second in low byte minute in high 3586 Power on hour and day BCD Hour in low byte day in high 3587 Power on month and year BCD Month in low byte year in high 3588 Power on error code BIT B15 stand for corrected lost flow 3589 Power off second and minute BCD Second in low byte minute in high 3590 Power off hour and day BCD Hour in low byte day in high 3591 Power off month and year BCD Month in low byte year in high 3592 Power off error code BIT B15 stand for corrected lost flow 3593 3594 Flow rate when power on REAL4 Flow rate after 60 seconds when power on 3595 3596 Flow rate when power off REAL4 3597 3598 Time duration when off LONG In seconds 3599 3600 Corrected lost flow when off REAL4 In cubic meters 3601 Power on second and minute BCD Second in low byte minute in high 3602 Power on hour and day BCD Hour in low byte day in high 3603 Power on month and year BCD Month in low byte
11. he command connecter amp The command connecter amp adds several basic commands into a one line compound command The compound command should not exceed a length of over 253 characters The prefix P should be added before every basic command to make the returned results having a check sum For example if the 1 flow rate 2 velocity 3 positive totalizer 4 net energy totalizer 5 the AIl input 6 the AI2 input of the address number 4321 flow meter are wanted to return with check sum the one line command is like W4321PDQD amp PDV amp PDI amp PDIE amp PBA1 amp PAI2 CR The returned data are 0 000000E 00m3 d AC CR 0 000000E 00m s 88 CR 1234567E 0m3 F7 CR 0 000000E 0GJ DA CR 7 838879E 00mA 59 3 911033E 01 8E CR Any command can be connected together For example if a serious key want be sent to set up the outer diameter to 1234 567 mm a compound command will be MENU11 amp M1 amp M2 amp M3 amp M4 amp M amp M5 amp M6 amp M7 amp M CR 5 3 the compatible communication protocols Flow meters made by our manufacturer have more than 10 different communications protocols For the easier replacement of a water meter most of these protocols are realized in LRF 2000 flow meters Here only one of them the default for compatible protocols CRL 61D D lt 50mm is given for reference These protocols are selectable by Menu63 after the selection of MOBUS ASCI or MODBUS RTU protocols YOUR FLOW MEASUREMEN
12. me which is defined by command 4C 3 Change the address of the meter command 4B Format 2Ah XXh4Bh YYh Answer 26h XXh4Bh YYh If XXh Y Yh this command can be used to do a loop test the net work or to scan and find the existed meters in the network Please pay attention to that the network may lose meters if this command is used in a noisy network 4 Change or assign a time for meter data recording command 4C Format 2Ah XXh 4Ch DDh HHh Answer 26h XXh 4Ch DDh HHh MMh ZZh DDh stands for the day HHh for hour MM for minute data are in BCD code DD is the day of this month for example 2Ah 86h 4Ch 12h 15h stands for assigning a recording time for the number 86 meter 86 the meter will record the flow rate total net flow the working timer and the error code when time is 15 00 the 12 of this month The recorded date will be read out by command 49 If DD 0 it stands that the data recording will take place by 15 00 for every day 5 Standard date and time broadcasting command 4D Format 2Ah AAh 4Dh ssmmhhDDMMYY Answer no answer In above ssmmhhDDMMYY is the date and time in BCD format Diagnostic code 00h stands that the system is working normally YOUR FLOW MEASUREMENT EXPERT www ultrasonicscn com 02h stands for the pipe may be empty or meter works improperly O5h stand for there exist hardware failure repair may needed 5 4 Key Value Table The key values are used in a network application By use of the k
13. nds should not exceed 253 compounding command in one line bytes long Handshaking request from a modem ATA CR If Acknowledgement fom a modem Handshaking from the flow meter to modem AT CR LF note 9 note 9 ener ene mee note 9 0 cr stand for carriage return its ASCII value is ODH If stand for line feed its ASCII value is OAH Note 1 d stand for a digit number of 0 9 O is expressed as 0 000000E 00 2 d stand for digit 0 9 the number before E is an integer 3 Working status code 1 6 letters refer to error code related chapter 4 s is ON OFF or UD For example TR ON RL ON means the OCT and RELAY are closed TR UD RL UD means the OCT and RELAY are not used 5 stand for key value for example value 30H means key 0 The command MA cr acts just like the number 4 key on the keypad was pressed YOUR FLOW MEASUREMENT EXPERT www ultrasonicscn com 6 a stands for the output current value The maximum value should not exceed 20 0 For example AO2 34567 AOO 2 7 dddddddd stands for the Electronic Serial Number 8 If there are more than one devices in a network all the basic command must be prefixed with N or W otherwise multiple flow meter may reply to the same request and thus a conflict may occurs 9 The returns by the special command for GSM networks contend Chinese characters 5 2 1Command prefixes and the command connecto
14. r 1 The P prefix The P prefix can be added before every basic command to have the returned message with a two digits check sum The check sum is obtained by a binary addition For example if the command DI CR 44H 49H 2BH 0DH in binary numbers will bring a return like 1234567E 0m3 CR 2BH 31H 32H 33H 34H 35H 36H 37H 45H 2BH 30H 6DH 33H 20H ODH OAH in binary numbers then the PDI CR will brings a return like 1234567E 0m3 F7 CR after the character are the check sum in ASCII format 2BH 3 1H 32H 33H 34H 35H 36H 37H 45H 2BH 30H 6DH 33H 20H 2 F7H Pay attention to that there may be no characters or only spaces before the character ss 2 The N prefix The usage of prefix N goes like N single byte address basic command For example if the address number 88 flow meter is going to be addressed the command should like NXDV CR the decimal value of X should be 88 The prefix W is strongly recommended for new users 3 The W prefix Usage W character string address basic command The value of the character string should have a value in the range of 0 65535 except for the value of 13 ODH carriage return 10 OAH line feed 42 2AH 38 26H amp YOUR FLOW MEASUREMENT EXPERT www ultrasonicscn com For example if the velocity of number 12345 flow meter is wanted the command can be like W12345DV CR 57H 31H 32H 33H 34H 35H 44H 56H 0DH in binary numbers 4 T
15. r part needs to be read Reading the fraction can be omitted The final accumulator result has a relation with unit and multiplier Assume N stands for the integer part for the positive accumulator the integer part is the content of REG 0009 0010 a 32 bits signed LONG integer Nf stands for the decimal fraction part for the positive accumulator the fraction part is the content of REG 0011 0012 a 32 bits REAL float number n stands for the flow multiplier REG 1439 then The final positive flow rate N Nf x10n 3 in unit decided by REG 1438 The meaning of REG 1438 which has a range of 0 7 is as following 0 cubic meter m 1 liter L 2 American gallon GAL 3 imperial gallon IGL 4 American million gallon MGL 5 Cubic feet CF 6 American oil barrel 1 barrel 42gallon OB 7 Imperial oil barrel IB While The energy flow rate N Nf x100 4 unit decided by REG 1441 n 0 10 is the energy multiplier which is in REG1440 2 Other variables are not given here Call us if you have a need YOUR FLOW MEASUREMENT EXPERT www ultrasonicscn com 3 Please note there are many of the data that is not applicable for the non energy measurement users These none energy related registers only serves for the intension of only one unique register table provided both with flow meter and energy meat 4 Meaning in error code BitO no received signal Bit low received signal Bit2 poor received signal Bit3 pipe emp
16. rrel day 5 1 2 REGISTER TABLE for the DATE accumulators 1 REGISTER for accumulators by day Accumulator data for every past day are stored in a loop queue Every day has 16 bytes of data and there are 64 days in total The current pointer which has a range of 0 63 for the day is in REG 0162 if the pointer is decreased by 1 when the pointer is 0 then new pointer value will be 63 Assume REG 0162 1 the data for yesterday are in REG 2825 2832 the data for the day before yesterday are in REG2817 2824 and the data for the day of 2 days ago are in REG 3321 3328 REGISTER TABLE for the DAY accumulators Note Range 0 63 Day in high byte format Integer BCD BCD LONG REAL4 Block No Register n a 0162 2817 2818 2819 2820 2821 2822 variable Data pointer Day and Error Code Month and year Year in high byte Total working time Net total flow for the day Net total energy for the day 2823 2824 REAL4 YOUR FLOW MEASUREMENT EXPERT www ultrasonicscn com 2825 Day and Error Code Day in high byte 2826 Month and year Year in high byte 2827 2828 Total working time 2829 2830 Net total flow for the day Net total energy for the 2831 2832 day ooo0oo0o0o00000 a ou 000 o0 0 0 o ooo 0 o000000000000 3321 3328 Data block No 63 Note See the meaning of the error code above 2 REGISTER for accumulators by month The structure of month a
17. the flow meter in a GSM network 5 1 The MODBUS protocol Both the two formats of the MODBUS protocol can be supported A software switch located at the window number 63 shorted as M63 after select MODBUS ASCI or MODBUS RTU will be in functioning The default option is MODBUS ASCII format LRF 2000 can only support MODBUS functions code 3 and code 6 i e reading registers and writing a register For example reading the registers from REG0001 to REG0010 in the unit 1 ultrasonic flow meter under the MODBUS RTU format the command could be as following 01 03 00 00 00 OA C5 CD hex Unit Function start REG Numbers of REGs Check sum While under the MODBUS ASCII format the command could be YOUR FLOW MEASUREMENT EXPERT www ultrasonicscn com 01030000000AF2 CR and LF Details about the standard MODBUS protocol will not be studied in this manual please the users find them on other related materials By default the RS232 RS485 will setup with 9600 none 8 1 9600bd none parity 8 data bits 1 stop bit 5 1 1 MODBUS REGISTERS TABLE MODBUS REGISTERS TABLE for LRF 2000 please take notice the difference with the water meter MODBUS table REGISTER NUMBER VARIABLE NAME FORMAT 0001 0002 2 Flow Rate REAL4 Unit 0003 0004 Energy Flow Rate REAL4 Unit 0005 0006 Velocity REAL4 Unit 0007 0008 Fluid sound speed REAL4 Unit 0009 0010 Positive acc
18. ty Bit4 hardware failure Bit5 receiving circuits gain in adjusting Bit6 frequency at the frequency output over flow Bit7 current at 4 20mA over flow Bit8 RAM check sum error Bit9 main clock or timer clock error BitlO parameters check sum error Bitl1 ROM check sum error Bitl2 temperature circuits error Bitl3 reserved Bitl4 internal timer over flow Bitl5 analog input over range Please try to override these energy related bits first when in flow only measurement YOUR FLOW MEASUREMENT EXPERT 5 Unit code for flow rate www ultrasonicscn com 0 Cubic 1 Cubic meter 2 Cubic meter 3 Cubic meter meter second minute hour day 4 liter second 5 liter minute 6 liter hour 7 liter day 8 American 9 American 10 American 11 American gallon second gallon gallon hour gallon day minute 12 Imperial 13 Imperial 14 Imperial 15 Imperial gallon gallon second gallon gallon hour day nimute 16 American million 17 American 18 American 19 American gallon second million gallon million gallon million minute hour gallon day 20 Cubic 21 Cubic 22 Cubic 23 Cubic feet day feet second feet minute feet hour 24 American oil 25 American oil 26 American oil 27 American oil barrel second barrel minute barrel hour barrel day 28 Imperial oil 25 Imperial oil 26 Imperial oil 27 Imperial oil barrel second barrel minute barrel hour ba
19. umulator LONG Unit is selected by M31 and depends on totalizer multiplier 0011 0012 Positive decimal fraction Same unit as the integer part 0013 0014 Negative accumulator Long is a signed 4 byte integer lower byte first 0015 0016 Negative decimal fraction REAL4 is a format of Singular IEEE 754 number also called FLOAT 0017 0018 Positive energy accumulator 0019 0020 Positive energy decimal fraction 0021 0022 Negative energy accumulator 0023 0024 Negative energy decimal fraction 0025 0026 Net accumulator 0027 0028 NININININININ Net decimal fraction 0029 0030 Net energy accumulator LONG 0031 0032 Net energy decimal fraction REAL4 N YOUR FLOW MEASUREMENT EXPERT www ultrasonicscn com 0033 0034 2 Temperature 1 inlet REAL4 Unit C 0035 0036 2 Temperature 2 outlet REAL4 Unit C 0037 0038 2 Analog input AI3 REAL4 0039 0040 2 Analog input AI4 REAL4 0041 0042 2 Analog input AI5 REAL4 0043 0044 2 Current input at AI3 REAL4 In unit mA 0045 0046 Current input at AI3 In unit mA 0047 0048 Current input at AI3 In unit mA 0049 0050 System password Writable OOH for unlock Password for hardware Writable AS55Ah for unlock 0053 0055 Calendar date and time Writable 6 Bytes of BCD stands SMHDMY lower byte first Day Hour for Auto Save Writable
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