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Load Cell Module DVP02LC-SL

DVP-PLC Operation Manual

6.3

Parameter Settings................................................................................................................. 23

6.4

Correction Settings ................................................................................................................. 25

6.5

Status Settings........................................................................................................................ 26

Steps of Correction............................................................................................................................. 28

7.1

Correction by MPU ................................................................................................................. 28

7.2

Correction by Software ........................................................................................................... 29

Application Examples ......................................................................................................................... 31

LED Indicators and Trouble-shooting ................................................................................................. 35

9.1

LED Indicators ........................................................................................................................ 35

9.2

Trouble-shooting..................................................................................................................... 36

Summary of Contents for DVP02LC-SL

Page 1: ...DVP02LC SL Load Cell Module Operation Manual DVP 0071020 01...

Page 2: ......

Page 3: ...and follow the instructions in case damages on the device or injuries on the operation staff occur Table of Content 1 Theory of Load Cell 3 2 Introduction to DVP02LC SL 3 2 1 Functions 4 2 2 Effectiv...

Page 4: ...ameter Settings 23 6 4 Correction Settings 25 6 5 Status Settings 26 7 Steps of Correction 28 7 1 Correction by MPU 28 7 2 Correction by Software 29 8 Application Examples 31 9 LED Indicators and Trou...

Page 5: ...24 bit resolution applicable for 4 wire or 6 wire load cells with various eigenvalues Therefore the response time can be adjusted in coordination with each other according to users needs On this basis...

Page 6: ...filter Setting range K1 to K5 Average value filter Setting range K1 to K100 Isolation method 500 VAC between digital circuits and ground 500 VAC between analog circuits and ground 500 VAC between ana...

Page 7: ...mm CH2 CH1 DVP02LC MAX MOTION MAX N ET ZERO MOTION ERROR ZERO NET L V POWER R UN SHD SEN EXC SIG SEN SIG EXC SEN SEN SHD SIG SIG EXC EXC 3 2 Product Profiles C H2 CH1 DVP02LC MAX MOTION MAX NET ZERO...

Page 8: ...cating the zero point weight MAX Orange Indicating the maximum weight MOTION Orange Indicating stable measurements 4 Installation and Wiring 4 1 Connecting DVP02LC SL to DVP SV series PLC MPU Open the...

Page 9: ...Please follow the PIN definitions for the wiring 8 PIN MINI DIN 9 PIN D SUB female PC COM Port DVP02LC COM Port Rx 2 5 5 8 1 2 1 2 3 4 5 6 7 8 1 4 6 7 8 4 3 GND Tx Tx GND 5V Rx There are 2 communicati...

Page 10: ...in guage CH2 Many load cells connected in parallel connected to a single DVP02LC SL Load Cell CH1 CH2 DVP02LC Load Cell Load Cell Load Cell Load Cell Load Cell Load Cell Load Cell Note 1 Please connec...

Page 11: ...CH1 to CH2 gross net weight Selecting the present weight to be gross weight K0 or net weight K1 bit0 to bit3 CH1 bit4 to bit7 CH2 bit8 to bit15 reserved Take CH1 for example bit3 to bit0 0000 gross b...

Page 12: ...ed 37 H 1025 O R W Upper limit for CH1 zero point check 38 H 1026 O R W Upper limit for CH2 zero point check Default K10 Range K 32 768 to K32 767 Reference for reset to zero When the weight is within...

Page 13: ...is K1 to K255 For CR 53 and CR 55 the default value is H 0000 and the range is ASCII 9600 7 E 1 See the Communication Format table Symbols O means latched X means non latched R means able to read dat...

Page 14: ...annels Explanations The average values of CH1 and CH2 are summed up and equalized The average value of all channels CH1 average value CH2 average value 2 If you use 2 load cells to measure the same ob...

Page 15: ...it falls below 1 it will automatically be switched to 1 Range Default 1 average times 100 10 CR 12 13 CH1 to CH2 average weight Explanations The average weight is displayed CR 14 15 CH1 to CH2 presen...

Page 16: ...56 57 58 59 5A 5B 5C 5D 5E 5F ASCII P Q R S T U V W X Y Z Hex 60 61 62 63 64 65 66 67 68 69 6A 6B 6C 6D 6E 6F ASCII a b C d e f g h i j k l m n o Hex 70 71 72 73 74 75 76 77 78 79 7A 7B 7C 7D 7E 7F AS...

Page 17: ...Default 0 When H 5678 is written in all set values will be saved in the Flash When the saving is completed CR 41 will become H FFFF If the value written in is not H 5678 it will automatically return t...

Page 18: ...Every error status is determined by its corresponding bit so there might be more than 2 error statuses occurring at the same time 0 refers to no error 1 refers to error occurring CR 52 53 54 55 Commu...

Page 19: ...easured value at CH1 as the net weight and disable CH2 If you know the weight of the packaging already you can skip the step of reading the tare weight 1 Read the tare weight Step 1 Write H 0000 into...

Page 20: ...for standstill check 5 3 3 Determining Zero Point You can use the zero point determination function to know if the object has been removed from the load cell If the bit4 and bit5 of CR 50 are 1 and th...

Page 21: ...tion is that the average times have to be 30 and the filter percentage has to be 10 to 50 Present measured value Range for filter percentage Quantity Relevant control registers y CR 43 44 Filter perce...

Page 22: ...detected in the current transmission mode 4 After the communication settings are completed click the icon on the toolbar or select Communication Online to establish the connection between the softwar...

Page 23: ...ntage has to be set 7 In the connection if you would like to upload the data in DVP02LC SL to software click the icon Or click the icon if you would like to download all the parameters set in the soft...

Page 24: ...the default setting is 1 y Baud rate Corresponds to bit4 to bit7 of CR 53 Scroll down to select 9600 19200 38400 57600 or 115200 The default setting is 9600 y Transfer mode The transmission mode corr...

Page 25: ...e transmission mode is set to be RTU the data length will be automatically set to 8 y Parity Corresponds to bit0 to bit1 of CR 55 Scroll down to select none odd or even The default setting is even y S...

Page 26: ...fault setting is Kg Standstill times The times of standstill checks corresponding to the value in CR 16 and CR 17 Enter the times here The range is 1 to 500 and the default setting is 5 Standstill ran...

Page 27: ...ick download to download the parameters to DVP02LC SL or click Upload to display the parameters of DVP02LC SL in the software Reset to zero command Corresponds to the value in CR 26 Click it to set th...

Page 28: ...to the values in CR 12 and CR 13 The unit after the figure is the previously set unit for measurement Status code Corresponds to the value set in CR 50 indicating the measuring statuses at CH1 and CH...

Page 29: ...s and conversion errors y Power supply abnormality Corresponds to bit0 of CR 51 When the power supply for DVP02LC SL encounters abnormality the indicator will turn red y Hardware abnormality Correspon...

Page 30: ...orrecting on the software Load cell without any load on it Reset current weight to zero Add standard weights on load cell Set the weight of the weight to be base point 7 1 Correction by MPU In this ex...

Page 31: ...eight 1kg 6 Write the weight of the weight weight base point into CR 33 as the WPLSoft program below TO K100 K33 K1000 K1 M2 SET M2 7 Execute the weight base point command by writing H 0002 into CR 26...

Page 32: ...the actual measuring requirements and specifications of the load cell After the parameter setups are done click Download to download them to DVP02LC SL 5 Click Correction on the left hand side column...

Page 33: ...main processing unit is DVP SX2 series PLC DVP20SX2 responsible for the PID operation The DVP02LC SL is used for detecting the tension of the load cell The measured value is outputted to the brake sys...

Page 34: ...ers y Parameters for DVP02LC SL Parameter Set value Explanation Eigenvalue 2 mV V 2 mV V is the eigenvalue spec for the load cell Measuring time 10 ms CH1 average times 50 CH1 max weight 32 767 The ma...

Page 35: ...nd connect them to a single channel here we have to disable CH2 3 The actual use of a weight for the correction PLC Program In actual operation DVP20SX2 is responsible for reading the average value fr...

Page 36: ...value MV by the PID instruction and output the value to DVP04DA SL y Devices D0 Average tension value D1 Target tension value D50 Voltage output from DVP04DA SL D100 PID parameter y Steps of PID tunin...

Page 37: ...ly is normal RUN LED LED status Indication Off DVP02LC SL stops operating Green light flashes DVP02LC SL operates normally ERROR LED LED status Indication Off No error occurring Red light flashes An e...

Page 38: ...on Off The current weight does not exceed max weight Orange light constantly on The current weight exceeds max weight MOTION LED LED status Indication Off The current weight is an unstable value Orang...

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