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Haiwell PLC - Load Cell Module Application Example

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Other parameters configuration and read are also read with MODR and MODW instructions.

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Summary of Contents for PLC

Page 1: ...Xiamen Haiwell Technology Co Ltd en haiwell com Load Cell Module User Manual Application Case Haiwell PLC User Manual Classic Programmable Logic Controller...

Page 2: ...sample 11 6 Read Average Weight and Real time Weight 13 7 Adjustment for weighing stability and response speed 14 8 Gross Weight and Net Weight 16 9 Automatic peeling 2AH Judge every 5S 17 10 Weighin...

Page 3: ...ation of Module No light MPU has identified the Module but no communication Constant light in green Serial or parallel port in communication Green jitter indicator on 30ms and off 30ms Parallel power...

Page 4: ...20 240 480 960Hz Internal resolution 24bits linearity error Static weighing 0 02 FS Excitation Voltage 5VDC 5 125mA it can connect with 4 load Cells each 350 Sensor sensitivity 1mV V 5 mV V Load Cell...

Page 5: ...3 19200 4 38400 5 57600 6 115200 R W 48 19200 N 8 2 RTU 03H Module name R W 04H Module name R W 05H Module name R W 06H Module name R W 07H IP Address default 192 168 1 111 R W 0x016F 08H IP Address...

Page 6: ...Z value and store them at 18H and 19H R W 0 0 no operation 1 Read the weight value as the tare weight and store it at 18H and 19H Others Invalid 26H Channel 1 Calibration Weighing Instruction Support...

Page 7: ...annel 2 Skin Weight Low Bytes R W 0 16 bits only use 58H 32 bits use 58H 59H 59H Channel 2 Skin Weight High Bytes R W 0 5AH Channel 2 Control Setting Bit 0 Reservation Bit 1 Gross Net Weight Display 0...

Page 8: ...and write the weight on the current chassis into CR67H 68H Step4 If the second calibration is needed add another standard weight to the weighing unit and write the weight on the current chassis into...

Page 9: ...a better heat dissipation do not mount PLC to a position near to the bottom top of the cabinet Do not mount PLC in vertical direction Extension Module wiring Connections between extension Modules and...

Page 10: ...pply capacity is not enough The correct approach is to enlarge the power supply of the external switch power If the host PLC is 220VAC power supply the extension Modules are powered by the parallel po...

Page 11: ...bit 32 bit weight switching can be realized by CR13H 16 bit display for 13H writing 0 and 32 bit display for writing 1 The program example is as follows 5 Calibration methods and program examples The...

Page 12: ...en haiwell com Haiwell PLC Load Cell Module Application Example 12 24 An example of 32 bit multi segment calibration program is as follows...

Page 13: ...13 24 6 Read the current weight The weight read by module is divided into average weight and real time weight Usually we read average weight The average weight CR of 16 bits is 10H and the real time...

Page 14: ...s The two factors that affect the stability and responsiveness of the module are sampling frequency average number of times and filtering ratio So we can adjust the above three parameters to achieve t...

Page 15: ...10 to 50 The default is 2 that is 20 assuming the average number of times is 10 then the system will arrange the 10 data collected from large to small and the filtering ratio is 20 That is to say two...

Page 16: ...32 bit display the current 32 bit weight value 16H 17H is read as the weight value of the leather weight and stored in 18H and 19H 2 18H 19H store the skin weight value 3 Enable control settings It i...

Page 17: ...imit and the upper weight limit CR is 24H Bit2 When this bit is 1 it means that the measurement of weighing unit reaches a stable state and the range value of stability judgment and the number of chec...

Page 18: ...Gross Weight 4 Automatic peeling range CR45 CR109 0 5 Sampling frequency CR27 CR91 2 30Hz 6 Average number of times CR30 CR94 10 7 Filtering Proportion CR31 CR95 2 8 Number of stability checks CR32 C...

Page 19: ...e 2400 4800 9600 19200 38400 57600 115200 optional Data format N 8 2 RTU E 8 1 RTU O 8 1 RTU N 8 1 RTU E 7 1 ASCII O 7 1 ASCII N 7 2 ASCII RS485 default parameters 19200 N 82 RTU station number 1 4 Wh...

Page 20: ...there is only one plc on the 485 port then you can use find standalone If there are many set the start address and stop address so that all the machines on the 485 port can be found and the parameters...

Page 21: ...table above we can see that the H01WG Module CR 12H means the real time weight PLC program this example H01WG communication is the default parameter station number 1 baud rate 19200 data format N 82 R...

Page 22: ...t on the current chassis into CR29H otherwise Step6 will be executed Step5 If the calibration of paragraph 3 is required add another standard weight to the weighing unit and write the weight on the cu...

Page 23: ...en haiwell com Haiwell PLC Load Cell Module Application Example 23 24...

Page 24: ...her parameters configuration and read are also read with MODR and MODW instructions Thanks for choosing Haiwell PLC If you have any questions about our products or services please let us know Haiwell...