1. Wide-range DC 7–36V power supply with an onboard voltage regulator chip, suitable for complex industrial power sources
2. Built-in protection circuits, including power isolation and magnetic isolation
3. Industrial-grade 8-channel analog acquisition module with 12-bit high-precision acquisition for greater accuracy
4. DIN-rail housing design supports stacking and combination, ensuring easy installation and safer operation
5. Features terminal block power input, suitable for data acquisition, IoT applications, and other fields
This product is an industrial-standard analog acquisition module supporting 8-channel synchronous acquisition across multiple ranges. It utilizes the Modbus RTU protocol and incorporates protection circuits such as power isolation, optocoupler isolation, self-resetting fuses, and TVS diodes.
Supports device address configuration (1–255) to allow cascading of multiple devices via the RS485 bus
On-board voltage regulator chip supports a wide input voltage range of 7–36 V
On-board integrated power isolation provides a stable isolated voltage; the isolated output requires no additional power supply
On-board integrated optocoupler isolation ensures signal isolation with high reliability and strong anti-interference capabilities
On-board self-resetting fuses and TVS (Transient Voltage Suppressors) effectively suppress surge voltages and transient spikes in the circuit, providing protection against overcurrent, overvoltage, lightning, and static electricity
12-bit high-precision data acquisition with multiple input range modes; supports single-ended/differential inputs and simultaneous voltage and current measurement
Utilizes high-precision resistors and zero-drift precision operational amplifiers for more accurate data acquisition
Built-in oversampling digital filtering algorithm and watchdog timer ensure stable output without system crashes
DIN-rail housing design supports stacking and combination, offering convenient installation and enhanced safety
Three external LED indicators facilitate monitoring of MCU status and signal transmission/reception status
Model: Modbus RTU Analog Input 8CH, Modbus RTU Analog Input 8CH (B)
Communication Interface: RS485
Communication Baud Rates: 4800, 9600, 19200, 38400, 57600, 115200, 128000, 256000
Default Communication Format: 9600, N, 8, 1
Modbus Protocol: Standard Modbus RTU Protocol
Supply Voltage: DC 7–36 V
Sampling Accuracy: 12-bit resolution, accuracy ≤3‰
Data Update Rate: 25 Hz
Input Mode: Supports both single-ended and differential inputs; simultaneous voltage and current
Default Mode: 8 channels in current mode (0–20 mA), 8 channels in voltage mode (0–10 V)
Range: 0–5 V/1–5 V, 0–20 mA/4–20 mA, 0–10 V/2–10 V, 0–20 mA/4–20 mA
Current sensing resistor: 249 Ω, 499 Ω
8-channel analog acquisition module × 1
Power adapter × 1
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