The ADAM-4500 is a fully functional, stand-alone controller for industrial automation and control. Its built-in ROM-/DOS (MS-DOS equivalent) operating system lets the user run either standard PC language development tools. One of its two communication ports can be configured as an RS-232 or RS-485 port, depending on jumper settings. The other port is a dedicated RS-485 port, allowing the controller to function in 2-wire, multi-drop RS-485 networks. With communication speeds up to 115.2 Kbps, a real-time clock, a watchdog timer, 256 K ROM, 256 K RAM, and panel or DIN-rail mounting, this device is a flexible, powerful unit in a small package.