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BW SENSING WF-WM420 Technical Manual
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BW SENSING WF-WM420 Technical Manual

Wifi wireless high speed high precision
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WF-WM420
WiFi Wireless High Speed High Precision
Technical Manual

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Summary of Contents for BW SENSING WF-WM420

  • Page 1 WF-WM420 WiFi Wireless High Speed High Precision Technical Manual...

  • Page 2: Product Introduction

    WiFi Wireless High Speed High Precision Inclinometer Product Introduction WF-WM420 WiFi wireless high speed high precision inclinometer sensor is a miniaturized intelligent digital tilt sensor designed for structural health monitoring. Using rechargeable lithium battery, it can work continuously for 24 hours on a single charge (continuous measurement and data transmission), and can be quickly charged by an external special charger.
  • Page 3 WF-WM420 WiFi Wireless High Speed High Precision Inclinometer Application Mechanical Characteristic Connectors Aviation plug Protection level IP65 Housing material Magnesium aluminum alloy anode oxidation Install Three M4 screws Performance Specifications Measuring range(°) ±90 Measuring axis Accuracy(°) At room temperature 0.05 Resolution(°)
  • Page 4 WF-WM420 WiFi Wireless High Speed High Precision Inclinometer Electrical Specifications 电气指标 Charging voltage 4.2VDC Charging current 1000mA Supply voltage 80mA（Typical value） Operating current 6000mAH Battery capacity Transmit power 13~16 dBm Receiving sensitivity -90~-67dBm Network Topology www.bwsensing.com Tel: +86 189 2129 2620...

  • Page 5: Electrical Connections

    WF-WM420 WiFi Wireless High Speed High Precision Inclinometer Package size Product Size:：L109*W65*H72.5（mm） Note:±1mm error for length and width dimensions, please refer to actual size. 4 Hole Electrical connections Definition of Aviation Plug Wiring BLACK GREEN YELLOW Color & function 4.2V POWER 12.00V...

  • Page 6: Product Installation

    WF-WM420 WiFi Wireless High Speed High Precision Inclinometer Product installation The correct installation method can avoid measurement error. The following points should be made when installing the sensor: First of all, to ensure that the sensor mounting surface and the measured surface completely close, the measured surface should be as horizontal as possible, can not have the angle shown in Figure A and Figure C, the correct installation is shown in Figure B and Figure D.
  • Page 7 WF-WM420 WiFi Wireless High Speed High Precision Inclinometer Debugging method 1 Serial data debugger SSCOM Download link: http://www.daxia.com/sscom/ http://www.daxia.com/sscom/sscom5.13.1.rar Instructions: ① Open the software and select ‘English’. ② Select the COM Port to be used. www.bwsensing.com Tel: +86 189 2129 2620...
  • Page 8 WF-WM420 WiFi Wireless High Speed High Precision Inclinometer ③ Select the BaudRate of 115200. ④ Unselect ‘HEXShow’ and ‘SendHEX’ and select ‘AddCrLf’. www.bwsensing.com Tel: +86 189 2129 2620 Bewis Sensing Technology LLC...
  • Page 9 WF-WM420 WiFi Wireless High Speed High Precision Inclinometer ⑤ Click ‘OpenCom’.nCom’. ⑥ Enter the command to be sent and click ‘SEND’. Open source software PuTTy Download link：https://www.chiark.greenend.org.uk/~sgtatham/putty/latest.html Instructions： ① Obtain the serial number, right-click ’ This PC->Manage->Device Manager->Ports (COM & LPT)’, if there are multiple COM*, you can try them one by one, but generally not COM1;...
  • Page 10 WF-WM420 WiFi Wireless High Speed High Precision Inclinometer ② Open the software; ③ Click Serial and select the serial port mode; ④ Enter the serial port number (Serial line: COM*) and baud rate (Speed: 115200); ⑤ Click Open to open the serial port;...
  • Page 11 WF-WM420 WiFi Wireless High Speed High Precision Inclinometer ⑥ Enter the command, and press Enter after entering a command. Note: Except Enter and Backspace, please do not press any non-printing characters (such as up, down, left and right, ESC), otherwise the input commands may be wrong, and please do not enter spaces if necessary, the same Causes a command error.
  • Page 12 WF-WM410 WiFi Wireless High Speed High Precision Inclinometer ③ Click Listen to start receiving data, if there is a pop-up window prompting network access, please click Allow, the sensor will automatically connect, and the receiving effect is as shown in the figure: ④...

  • Page 13: Command List

    WF-WM420 WiFi Wireless High Speed High Precision Inclinometer Command list String commands sent through the serial port The following commands can configure the basic parameters of the sensor through the serial port. The serial port parameters are 115200bps, 8-bit Frame Length, 1 stop bit, and no parity bit. For the use of the serial port, please refer to the serial debugging tools section in the debugging method.
  • Page 14 WF-WM420 WiFi Wireless High Speed High Precision Inclinometer Prompt: Most commands display further prompts when entering commands without entering parameters. ④ ECHO echo mode setting and acquisition MINIMALIST: Minimalist mode, only display the status of sending success or failure and query information,...
  • Page 15 WF-WM420 WiFi Wireless High Speed High Precision Inclinometer Set echo mode Send: ECHO+MINIMALIST or NORMAL or ADVANCED return: OK Example: ECHO+ADVANCED Get current echo mode Send: ECHO+STATUS Return: Current Mode: Current Mode ⑤ ADDR device address (not IP address) setting and...
  • Page 16 WF-WM420 WiFi Wireless High Speed High Precision Inclinometer ⑥ AOUT automatic output frequency setting and acquisition The allowed frequency range is 0-1000 (Hz), but higher than 50Hz may cause unstable operation. Please try to select a frequency within 0-50Hz. When the set automatic output frequency exceeds 1000, it is automatically set to 0.
  • Page 17 WF-WM420 WiFi Wireless High Speed High Precision Inclinometer Get current Wi-Fi information and status Send: WLAN+STATUS Return: Current Status: SSID<current network name> Password<current password> Connected or Disconnected ⑧ SOCKET socket settings and acquisition The protocol can choose TCP or UDP protocol, the actual sending frequency (pack/s) of UDP can be higher but the packet will be lost.
  • Page 18 WF-WM420 WiFi Wireless High Speed High Precision Inclinometer Get the current zero state Send: ZERO+STATUS Return: Current Status: Current status ⑩ SAVE Save configuration Save the sensor address, sending frequency, WLAN and SOCKET configuration, but do not save the echo mode.
  • Page 19 WF-WM420 WiFi Wireless High Speed High Precision Inclinometer Hexadecimal commands sent over the network 1 Data frame format: Identifier Frame Length Address Code Command Data Checksum (1 byte) (1 byte) (4 byte) （1 byte) (n byte) (1 byte) 0x77 Data format: 16...
  • Page 20 WF-WM420 WiFi Wireless High Speed High Precision Inclinometer The Data part is 12 Byte, divided into four groups, namely x-axis angle, y-axis angle, temperature, battery power. Each group of angle 4 bytes is a compressed BCD code, the first bit is the sign bit (0 positive, 1 negative), three integer values, four decimal places;...
  • Page 21 WF-WM420 WiFi Wireless High Speed High Precision Inclinometer 2.6 Set automatic output frequency Command：77 09 0 0 0 0 0 0 0 Identifier Frame Length Address Code Command Data Checksum (1 byte) (1 byte) (4 byte) （1 byte) (2 byte)
  • Page 22 WF-WM420 WiFi Wireless High Speed High Precision Inclinometer 2.9 Save Settings Command：77 07 00 00 00 01 0A 12 Identifier Frame Length Address Code Command Data Checksum (1 byte) (1 byte) (4 byte) （1 byte) (0 byte) (1 byte) 0x77...
  • Page 23 WF-WM420 WiFi Wireless High Speed High Precision Inclinometer Sensor data transmission process Sensor data transmission process： ① You can use the command WLAN+SET+... to set or use the command WLAN+STATUS to check whether it is connected; ② It can be set through the command SOCKET+SET+… or through the command SOCKET + STATUS to see if it is connected;...

  • Page 24: Troubleshooting

    WF-WM420 WiFi Wireless High Speed High Precision Inclinometer Troubleshooting （1） No response to send string command There may be no power supply or the switch is not turned on; Maybe the serial port baud rate is not 115200bps; The wrong serial port number may be selected;...
  • Page 25 WF-WM420 WiFi Wireless High Speed High Precision Inclinometer Executive standard Enterprise quality system standard: ISO9001:2015 standard（certificate number：23919Q10455R0S） ● CE certification (certificate number:M.2019.103.UY1151) ● RoHS (Certificate：G190930099) ● www.bwsensing.com Tel: +86 189 2129 2620 Bewis Sensing Technology LLC...
  • Page 26 WF-WM420 WiFi Wireless High Speed High Precision Inclinometer Wuxi Bewis Sensing Technology LLC Address: Building 30, No. 58 Xiuxi Road, Binhu District, Wuxi City, Jiangsu Province, China Tel/Whatsapp: +86 189 2129 2620 Email: sales@bwsensing.com Website: www.bwsensing.com...