Related Manuals for JXCT JXBS-3001-NPK-RS
Summary of Contents for JXCT JXBS-3001-NPK-RS
- Page 1 RS485 Modbus JXBS-3001-NPK-RS Soil NPK Sensor User Manual JXBS-3001-NPK-RS Soil NPK Sensor User Manual RS485 Modubus Version: 2.0 Date: 2020-10-24 Status: Released www.jxct-iot.com 1 / 13...
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Page 2: Table Of Contents
RS485 Modbus RS485 Modbus JXBS-3001-NPK-RS Soil NPK Sensor User Manual JXBS-3001-NPK-RS Soil NPK Sensor User Manual Contents 1 Introduction …………………………………………………...….. 3 1.1 Product Overview.……………………………………………...3 1.2 Parameters …………………………………………………...3 1.3 Structure & Size……………………………………....3 1.4 System Frame Diagram …………………………………….…4 2 Installation & Wiring ………….…………………………..…..5 2.1 Product &... -
Page 3: Introduction
RS485 Modbus JXBS-3001-NPK-RS Soil NPK Sensor User Manual 1 INTRODUCTION 1.1 Product Overview The NPK sensor is designed for detecting the content of nitrogen, phosphorus and potassium in soil, determining the fertility of the soil and facilitating the evaluation of the soil condition by the customer system. -
Page 4: System Frame Diagram
User can also connect the sensor to the computer by using USB to 485 converter, and use the sensor configuration tool provided by JXCT for configuration and testing. Picture 1: Single Sensor Working Diagram This product can also be used in combination with multiple sensors on one 485 bus. -
Page 5: Installation & Wiring
RS485 Modbus JXBS-3001-NPK-RS Soil NPK Sensor User Manual sensors. If you need to connect more 485 sensors, you can use 485 repeater to expand more 485 devices, and the other end to connect PLC with 485 interface and pass 485 interface chip. Connect to the micro-controller, or use USB to 485 to connect to the computer, use the sensor configuration tool provided by our company for configuration and testing. -
Page 6: Interface Description
RS485 Modbus JXBS-3001-NPK-RS Soil NPK Sensor User Manual 2.2 Interface Description The power interface can be 12-24V for wide voltage power supply. When wiring the 485 signal line, note that the A/B lines cannot be connected in reverse, and the addresses between multiple devices on the bus cannot conflict. -
Page 7: Buried Measurement Method
RS485 Modbus JXBS-3001-NPK-RS Soil NPK Sensor User Manual 2.4 Buried Measurement Method Vertically dig pits with a diameter of >20cm, insert the sensor steel needle horizontally into the pit wall at a given depth, fill the pits tightly, and stabilize for a period of time, then measure and record for several days, months or even longer. -
Page 8: Software
3 Configuration Tool Installation JXCT provides the matching "SENSOR MONITORING SOFTWARE", which can conveniently use the computer to read the parameters of the sensor, and flexibly modify the device ID and address of the sensor. -
Page 9: Modify The Baud Rate And Device Id
RS485 Modbus JXBS-3001-NPK-RS Soil NPK Sensor User Manual all devices and baud rates on the current 485 bus. . Please note that there is only one sensor on the 485 bus that needs to be automatically acquired using the software. -
Page 10: Communication Protocol
RS485 Modbus JXBS-3001-NPK-RS Soil NPK Sensor User Manual 4 Communication Protocol 4.1 Communication Basic Parameters Parameters Specs Coding 8-bit binary Data bit 8-bit Parity bit Stop bit 1-bit Error check CRC(redundant cyclic code) Baud Rate 2400bps/4800bps/9600bps.Can customize. Default 9600bps 4.2 Data Frame Format Definition Adopt Modbus-RTU communication protocol, the format is as follows: Initial structure ≥... -
Page 11: Register Address
RS485 Modbus JXBS-3001-NPK-RS Soil NPK Sensor User Manual Answer Frames Address Function Effective number Data area Second Check code Code of bytes data area data area code 1bit 1bit 2bit 2bit 1bit 2bit 2bit 4.3 Register Address Register PLC or configuration... - Page 12 RS485 Modbus JXBS-3001-NPK-RS Soil NPK Sensor User Manual NPK content: 0020 H（hexadecimal ）=32=>Nitrogen=32mg/kg 0025 H（hexadecimal ）=37=>Phosphorus=37mg/kg 0030 H（hexadecimal ）=48=>Potassium=48mg/kg 4.4.2 Reading the value of soil nitrogen at device address 0x01 Inquiry Frame Address Function Register Register CRC_L CRC_H Code Code...
- Page 13 RS485 Modbus JXBS-3001-NPK-RS Soil NPK Sensor User Manual Phosphorus content：0025 H（16hexadecimal）=37=>Phosphorus=37mg/kg 4.4.4 Reading the Value of Soil Potassium in Device Address 0x01 Inquiry Frame Address Function Register start Register length CRC_L CRC_H Code Code address 0x01 0x03 0x00 0x20 0x00 0x01...
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