Thanks to this shield, you can now connect your MKR board to any of the industrial systems that using the RS 485 protocol.

The MKR 485 shield is the ultimate expansion that allows MKR boards to connect to almost any legacy industrial system, such as industrial PLCs, controllers, drives and HMIs. Old industrial systems (e.g., machinery, heating systems, and conveyors) can to turned into IoT devices through a serial connection using the MKR 485.

The shield is based on the MAXIM MAX3157 ( Datasheet ) and provides Half / Full Duplex . 

Standard operational mode: Half Duplex

OSH: Schematics

The Arduino MKR 485 Sheld is open-source hardware! You can build your own board using the following files

• Maxim MAX3157 Datasheet

Usage notes

The Arduino MKR 485 allows the Arduino MKR family of boards to communicate with industrial automation systems or to extend the serial wired communication over much longer range. This shield supports half and full duplex with or without biasing and termination, master slave configuration. Most of these configurations are physical and the 3 ways dip switch allows you to set up the connection properly.

(* Factory configuration)

Tutorials

Now that you have a basic knowledge of the shield, you may find inspiration in our Project Hub tutorial platform