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8-Channel Isolated Analog Data Acquisition Module
The 8-Channel Isolated Analog Data Acquisition Module is an industrial-grade 12-bit ADC with RS485 communication, designed for reliable multi-channel voltage...
The 8-Channel Isolated Analog Data Acquisition Module is an industrial-grade 12-bit ADC with RS485 communication, designed for reliable multi-channel voltage and current measurement in demanding environments.
Each channel is independently configurable for different input ranges, and the module supports standard 2-wire, 3-wire, and 4-wire sensor connections. Communication and input/output are optically isolated to 1500VDC, protecting your system from interference and electrical faults. The module uses the standard Modbus RTU protocol for easy integration with PLCs, SCADA software, industrial PCs, and OPC systems.
Key Features
- 8 Independent Channels – Each channel can be configured for a different input range
- Multiple Input Ranges – Supports 0–5V, 1–5V, 0–2.5V, 0–20mA, and 4–20mA (factory default: 4–20mA)
- 12-Bit Resolution – Collection accuracy of ±1‰
- Opto-Isolated RS485 – 1500VDC isolation voltage for reliable industrial communication
- Modbus RTU Protocol – Standard industrial protocol for easy integration
- Flexible Sensor Support – Works with 2-wire, 3-wire, and 4-wire sensors
- Wide Power Supply – 12–30VDC input with reverse-polarity protection
- Software Watchdog – Automatic recovery from communication faults
Specifications
- Input Channels: 8× single-ended analog
- Input Types: Voltage and current
- Sampling Rate: 1400 sps total (50 sps per channel)
- Input Impedance: 10 MΩ (voltage), 249 Ω (current)
- Baud Rate: 1200–115200 bps
- Max Transmission Rate: 180 reads/sec at 115200 bps, 24/sec at 9600 bps
- Power Consumption: 0.5W rated at 24VDC
- Operating Temperature: −40°C to +80°C
- Storage Temperature: −40°C to +85°C
Ideal For
- Industrial monitoring and SCADA systems
- Multi-sensor data acquisition
- PLC and OPC integration projects
- Environmental and process monitoring
Package Contents
- 1× 8-Channel Isolated Analog Data Acquisition Module
Resources
Jargon buster
Plain-language definitions for the technical terms used above.
- 12-bit resolution
- 12-bit resolution means the sensor’s measurement is divided into 4096 possible digital values. Higher resolution can make small changes in motion or tilt easier to detect, as long as the sensor range and noise are suitable for the project.
- ADC
- An analogue-to-digital converter reads a changing voltage and turns it into a number the microcontroller can use. It matters when connecting analogue sensors such as light, sound, or variable-resistor sensors.
- baud
- Baud is the signalling rate of a serial connection, often used as the speed setting for UART communication. Matching the baud rate matters because both connected devices must use the same setting for readable data.
- Modbus
- Modbus is an industrial communication protocol used by many meters, sensors, PLCs, and automation devices. Modbus support matters because it can make the controller easier to integrate with existing industrial equipment.
- Modbus RTU
- Modbus RTU is a version of Modbus commonly used over RS485 serial wiring. It matters if you need to connect the controller to industrial sensors, meters, or drives that use serial Modbus rather than Ethernet.
- RS485
- RS485 is a robust wired serial communication standard often used in factories, farms, and buildings where cables may be long or electrically noisy. It matters because it lets this controller connect to industrial sensors, meters, and control equipment over longer distances than typical hobby serial wiring.
- SCADA
- SCADA means Supervisory Control and Data Acquisition, a type of system used to monitor and control industrial processes from computers or control rooms. SCADA compatibility matters if the controller will be part of a larger automation or monitoring setup.
- SPS
- Samples per second, meaning how many measurements the converter can make each second. Higher SPS gives faster updates, while lower SPS on this board allows higher-resolution readings.
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