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RS422 / RS485 Serial HAT

Product Code:MMP-1119

Ex.Tax £24.99

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RS422 / RS485 Serial HAT
Questions2 Answers2 | Expand All
does it support 76.8kbps baudrate?
does it support 76.8kbps? I want to use it for BACnet MSTP, thanks
Jose Vu
  • Looks like the heart of this board can handle up to 20Mbps -
    ModMyPi LTD
    Was this answer helpful? 0
RS485 adressing
Is it possible to give an adress for the RS485 BUS with the dips or just programming? Do you have a manual specifically for this?
Stefan Ivanov
  • DIP switch settings manual can be found here
    ModMyPi LTD
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The RS422 / RS485 Serial HAT from HWHardSoft is a fully galvanic isolated Serial communication HAT designed for use with the Raspberry Pi. RS485 can be used across large distances, so isolation of the RS485 bus ensures that your Raspberry Pi is fully protected!

RS485 is in use in many applications like industrial and home automation (for example MODBUS), lighting control (DMX), video surveillance (for example Pelco D) and many more!

RS422 / RS485 Serial HAT Features:

  • RS485 mode (half duplex)
  • RS422 mode (full duplex)
  • Galvanic isolation between Raspberry Pi and connected RS485 bus
  • Enhanced ESD protection
  • Adjustable automatic transceiver switching for RS485 mode
  • Adjustable control of transceiver/receiver via GPIO pin
  • Adjustable Pull-Up, Pull-Down und terminating resistors
  • Indicator LEDs for RX and TX 
  • Removable block terminal for bus connection
  • Many options adjustable via DIP switches


Datasheet and DIP Switch Settings


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