1.Introduction
The CMCU-08 is an industrial-grade 5-channel and 12-channel strain gauge transmitter launched by Shenzhen RunesKee Technology Co., Ltd. It supports single-bridge, half-bridge, and full-bridge configurations. Compact, easy to use, stable, and reliable in performance, it can simultaneously collect data from multiple resistance strain gauges, with sampling rates of 10Hz, 40Hz, 640Hz, and 1.28KHz. It connects to a computer via a single USB interface and also supports communication with devices/PLCs/computers through an RS485 serial port.
Features include:
- USB power supply range: 5V;
- RS485 interface power supply range: DC 7-28V;
- Operating temperature: -40℃ to 85℃;
- Communication interfaces: USB and RS485 serial communication;
- Sampling channels: 5-channel/12-channel;
- Communication format: Baud rate 115200 (adjustable), 8 data bits, 1 stop bit, no parity;
- Communication protocol: MODBUS-RTU protocol, supporting function codes: 03, 06, 16 (0x10);
- AD precision: 24-bit;
- Resolution: 1/50,000 division;
- Address range: 1-247, default is 1;
- Sampling frequency: 10Hz, 40Hz, 640Hz, 1.28KHz;
- Screen size: 2.0-inch 320*240 TFT color display;
- Configurable parameters include division value, baud rate, zero-tracking range, zero-tracking enable, average filtering, creep tracking range, etc., making it suitable for most applications.
2.Hardware Specifications
2.1 Hardware Parameters
2.2 Hardware Resource Overview
2.3 Hardware Dimensions
3.Setting Up the Test Hardware Environment
3.1 Connecting Strain Gauges to the CMCU-08 Transmitter
3.2 Method 1: Connect to a computer using just a USB cable
3.3 Method 2: Connect to a computer using the RS485 interface
3.4 Method 3: Use with a wireless transparent transmission kit for wireless communication
3.5 Method 4: Pair with an RS485 4G module for IoT cloud connectivity
4.Appendix 1: Example Connections for Strain Gauge Transmitters
5.Appendix 2: Applications of Strain Gauge with Different Structures
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