The Unitronics Vision120 is a palm-sized PLC with a built-in Operator Panel. The panel offers a graphic display screen and keypad. This small, powerful device supports up to 256 I/Os (on-board plus expansion modules). A rich range of embedded features include multiple auto-tuned PID loops, internal 120K structured data table, loadcell support, and communication options such as GSM/SMS, MODBUS, CANbus, function blocks that enable Vision to communicate with devices using proprietary COM protocols, plus remote access and data export software utilities. CANopen Master (supports PDO and NMT, including RTR and SYNC) UniCAN (Multi-master CANbus network of 60 controllers) MODbus GSM support - enables SMS messages.