The TD900 is a 15 inch Windows 7 Panel PC running on Windows 7 Pro and has an Intel ® Celeron Quad Core ® J1900 Processor at 2GHz. It also has a 64 or optional 128 GB Solid State hard drive 2GB DDR3 RAM or optional 4GB. The display is a 24 bit LVDS and has 1024 x 768 pixels with LED back-light display. The TD900 is equipped with an RS232, RS485, USB, and 2 x Ethernet ports. The protocols on these ports are CAN open, Modbus Master/Slave and Modbus TCP/IP. Programming is performed by the use of the PLprog software available free of charge and ladder diagrams. It has both RS232 and RS485 serial ports and comes complete with a real-time clock and battery back up.