Resources:
Wiki: www.waveshare.com/wiki/Modbus_RTU_Analog_Input_8CH
8-Channel 12-Bit Modbus RTU Analog Input Acquisition Module – Industrial-Grade High-Precision Multi-Range Data Acquisition
This 8-Channel 12-Bit Modbus RTU Analog Input Acquisition Module is engineered for industrial automation, monitoring and data-logging applications requiring stable, isolated and high-accuracy analog input sampling. It supports simultaneous 8-channel acquisition with multiple input ranges, enabling reliable measurement of voltage and current signals in both single-ended and differential configurations. Built with power isolation, magnetic isolation, resettable fuse protection and TVS surge suppression, the module ensures robust performance even in electrically noisy environments. The onboard oversampling digital filtering algorithm and watchdog safeguard continuous, accurate output without system crashes. Its DIN-rail mount enclosure allows clean integration into control cabinets and supports easy stacking for multi-module installations.
Key Features:
- 8-Channel 12-Bit Precision Acquisition: Supports simultaneous multi-range voltage and current inputs for industrial data collection.
- Robust Modbus RTU Communication: Compatible with RS485 bus networks with configurable device address (1–255) for multi-device cascading.
- Full Electrical Isolation: Built-in power and magnetic isolation for stable operation in interference-prone industrial environments.
- Advanced Protection Circuits: Equipped with resettable fuse and TVS for surge suppression, overload protection and electrostatic resistance.
- Wide Power Supply Support: Operates from 7–36V with onboard voltage regulation for flexible deployment.
- High-Accuracy Design: Incorporates zero-drift op-amps and precision resistors for improved measurement reliability.
- Digital Filtering & Watchdog: Ensures consistent, crash-free operation with oversampling noise reduction.
- Industrial Rail-Mount Housing: Supports stacking and secure installation in control cabinets with status LEDs for diagnostics.
Primary Function
Industrial Grade Isolated Protection
Supports Voltage/Current Acquisition
Wider Measurement Range
8-ch analog acquisition interfaces, voltage and current acquisition is switchable via jumper. Multiple Ranges Configurable via Software
Interface
Connection Diagram
Supports Multi-Device Cascading with device addresses (1-255), single-ended/differential input, and simultaneous capture of voltage and current.
Dimensions
Package Content:
- Modbus RTU Analog Input 8CHx1
- Power supply terminal adapterx1
