• sales

    +86-0755-88291180

Raspberry Pi RS485 CAN Board User Guide

Overview

RS485&CAN Shield is an industrial communication module for Raspberry Pi, there are on board 2*RS485 Bus and 1*CAN Bus communication interface via SPI interface.

CAN bus and RS485 bus powered through separated isolation power module, signal between the transceiver and the controller is isolated , ESD protection for the communication port, ensure your raspberry pi can be used in more strictly industrial scene.

Features

  • Compatible with Raspberry Pi 4 Model B/3B+/3B/2B/Zero/Zero W.
  • Only a small amount of GPIO are used and the rest pins allow to work for other expansion function. please refer to RS485 CAN Shield#GPIO MAP
  • Power supply and signal isolation, Build-in surge and ESD protection.
  • CAN function, onboard CAN controller MCP2515 via SPI interface, onboard high speed CAN transceiver, onboard digital isolation ADUM1201BRZ, Communication Rates 20Kbps-1Mpbs can be programmed arbitrarily.
  • RS485 function, controlled via UART, half-duplex communication, supports automatic TX/RX control without programming, onboard SPI to RS485 SC16IS1752. Electrical data isolation ADM2483.
  • On board individual 120 Ohm terminal resistance, Impedance matching and guarantee the ability to drive.

GPIO MAP

PIN NoPIN of RpiUsage
PIN18GPIO_24RS485 Interrupt
PIN19GPIO_10SPI0 MOSI
PIN21GPIO_9SPI0 MISO
PIN22GPIO_25CAN Interrupt
PIN23GPIO_11SPI0 SCLK
PIN24GPIO_8RS485 Transfer Chip Selection
PIN26GPIO_7CAN Transfer Chip Selection

Output Interface


No.FunctionDescription
1RS485_A1RS485-1 A Single
2GND_485RS485-1 Isolated GND
3RS485_B1RS485-1 B Single
4RS485_A2RS485-2 A Single
5GND_ISORS485-2 Isolated GND
6RS485_B2RS485-2 B Single
7CANHCAN-H
8CAN_GND_ISOCAN Isolated GND
9CANLCAN-L S
TAG: Raspberry Pi 11.6 inch LCD HDMI /Type C Display In-Cell Capacitive TouchScreen 1768x828 For Jetson Nano/mini Computer PC FT232RNL USB TO TTL Industrial UART Can For Raspberry Pi 5 Terminal Debug RP2040 Camera Raspberry Pi Camera X1003 Raspberry Pi 5 PCIe to M.2 NVMe SSD MINI Adapter Board HAT Pi5 2242 2230 Raspberry Pi 5 D HDMI to RGB Milk-V Duo RJ45 Raspberry Pi Pico 1024×600 Jetson Orin NX Raspberry Pi 5 RTC Battery Milk-V Duo Wiki ESP32 C6 Development Board 1.47 inch LCD Touch Screen 1.47inch Display 172×320SD AXS5106L JD9853 RP2040 ESP32 S3 Development Board 1.75 inch AMOLED Display TouchScreen SD slot 6-axis sensor Xiaozhi AI Deepseek Raspberry Pi RTC WatchDog HAT (B) Real time clock Onboard DS3231SN High Precision RTC Chip ESP32 C3 Round LCD Development Board Electronic EYE 0.71 inch Display Watch Screen GC9A01 160x160 Circular LCD Screen Raspberry Pi Pico Install Espressif IDF Plugin Tutorial User Guide