Although M5 core is ESP32-based, having Wi-Fi and Bluetooth integrated, it doesn't stop you enable the Ethernet function. This LAN is an M5 Base that having a W5500 chip, which is a Hardwired TCP/IP embedded Ethernet controller that provides easier Internet connection to embedded systems. This Base is specifically designed for industrial application scenarios, comes with a couple of HT3.96 connectors, 485 metal rail and magnet discs for easy installation and fixation. The 6 pins of HT3.96 connector are dangling, you can wire them up with the M-BUS and other circuits as you like.
The figure below shows the inner of LAN
If you need to add RS485 interface, soldering the RS485 board onto the main board pin correspondingly.
TTL-to-RS485 adapter board and LAN base
The figure below tells you how the TTL-to-RS485 adapter board connected onto LAN backplane
The serial port pins on the RS485 board will be connected to the GPIO16 and GPIO17 of the LAN backplane.
With the LAN module and the appropriate accessories for a DIN 35mm mounting it is the perfect accessory for the M5Stack in industrial environments. Also the variable input voltage of 9-24 Volt and the optional RS485 connection is very well solved. A bad thing that the Battery Module (UPS) cannot be combined with the LAN module (Battery Pack cannot be charged via LAN Module).
LAN Module with W5500
very good product, work fine. Thanks
Perfect! Very good quality. Top seller.