Design of ARM based data Acquisition &Control using Ethernet is proposed. This system is an intelligent for data acquisition, monitoring and output control. Proposed system designed based on ARM Processor with RTOS. An embedded system with ARM processor can be used for diverse industrial applications involved with a real time kernel for task management, multi-tasking etc. RTOS can be ported to ARM hardware, and then the system can deal with much more complicated tasks. Embedded system designed provides a generic design with all kind of data acquisition and control. System is used as an embedded web server with all data by typing the IP address user get webpage onscreen contains all the current status of the devices. The Administrator can Real-time control the devices through Ethernet Controller. Motivation behind this project involves acquiring the temperature data from a boiler or machine and in turn controlling the boilers through a Ethernet web server prior to the instrumental damages or failures