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MAX485 RS-485 Module TTL to RS-485 module for Arduino Raspberry

146

This module interfaces an Arduino or similar microcomputer to RS-485. RS485 is used for Serial Communications over longer distances than direct RS232 or TTL, and supports multiple units on the same bus (Multi-Drop).

  • This module can be used to send Arduino serial data over long distances (up to 1 Km) using RS485 signals.
  • The RS485 serial bus interface standard transmits differential balanced signals.
  • This has strong anti-interference ability in the common mode, allows a twisted pair transmitter driver on a number of connected devices.
  • The communication distance is up to 1200 meters, the rate is up to 20Mbps, and it can be used in high noise environments, such as industrial automation.

The module makes it simple to use with microcontroller's UART to create bidirectional RS485 networks. In an RS485 network at any time only one device is in the sending state, and all other equipment should be in the receiving state. Each Arduino controls its RE / DE pin control to specify the device which is sending data to the RS485 network, or receiving data from the RS485 network.

Specifications

  • On-board MAX485 chip, low-power, Slew-Rate Transceiver 
  • RS485 is brought out to 5.08 (mm) pitch 2P terminal for easy wiring RS-485 communication
  • All pins can be controlled by the microcontroller
  • 120R terminating resistor on board
  • Power LED Indication
  • 2.54mm Pitch interfacing.
  • Working voltage: 5V

Board size: 44 (mm) x14 (mm)

This module interfaces an Arduino or similar microcomputer to RS-485. RS485 is used for Serial Communications over longer distances than direct RS232 or TTL, and supports multiple units on the same bus (Multi-Drop).

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