Industrial 8-Ch Analog Acquisition Module, 12-bit, 0~5V / 1~5V / 0~20mA (default) /4~20mA

Modbus RTU Analog Input 8CH is an industrial standard analog acquisition module, supports multiple ranges and 8-ch simultaneous acquisition. Adopts Modbus RTU protocol with built-in protection circuits such as power isolation, magnetical isolation, resettable fuse, and TVS.

User Manual / Datasheet / Example Codes Etc.

Features

• Configurable device address (1~255), multi devices can be cascaded on RS485 bus
• Onboard voltage regulator, supports 7~36V wide range power supply
• Onboard unibody power supply isolation, provides stable isolated voltage, needs no extra power supply for the isolated terminal
• Onboard unibody magnetical isolation, allows signal isolation, high reliability, strong anti-interference
• Onboard resettable fuse and TVS (Transient Voltage Suppressor), effectively suppresses surge voltage and transient spike voltage in the circuit, provides over-current/over-voltage proof, lightningproof & anti-electrostatic
• Supports 12-bit high-precision acquisition with multiple range input modes, supports single-ended/differential input, supports voltage and current simultaneous acquisition
• Adopts high-precision resistors and zero-drift high-precision operational amplifier for more accurate data acquisition
• Built-in oversampling digital filtering algorithm, onboard watchdog, for stable output without crashing
• Rail-mount case design, support stacking combination, easy to install and safer to use
• 3x LEDs for indicating the MCU status and signal transceiving status

Specifications

• COMMUNICATION INTERFACE : RS485
• BAUD RATE : 4800, 9600, 19200, 38400, 57600, 115200, 128000, 256000
• DEFAULT COMMUNICATION FORMAT : 9600, N, 8, 1
• MODBUS PROTOCOL : Standard Modbus RTU protocol
• POWER SUPPLY : DC 7~36V
• SAMPLING ACCURACY : 12-bit resolution, accuracy ≤3%
• DATA UPDATE RATE : 25Hz
• INPUT MODE : supports single-ended/differential input, supports voltage and current simultaneous acquisition
• DEFAULT MODE : 8-ch current mode, 0~20mA
• RANGE : 0~5V/1~5V , 0~20mA/4~20mA
• CURRENT SAMPLING RESISTOR : 249Ω

Package Includes 

Primary Function

Supports Sending Modbus RTU Protocol Commands Via RS485

To Acquire Data From 0~20mA/0~10V Sensor

Industrial Grade Isolated Protection

Supports Voltage/Current Acquisition Wider Measurement Range

Interface Introduction

Connection Diagram

Wide Voltage Power Supply, Isolated RS485 Interface

Built-In Fuse And Anti-Reverse Protection, With ESD Protection For Analog Input

Dimensions

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