The is a micro-PLC (Programmable Logic Controller) with an integrated HMI (Human-Machine Interface). This specific variant is often sold as an I/O expansion or a specific configuration within the M91 series, featuring a compact design suitable for industrial automation. 🏗️ Hardware Overview
Includes a built-in serial port, typically supporting RS232, though some M91 configurations allow for RS485 or CANbus integration for decentralized networking. M91-t4-r6-zk1 Manual