The PAC’s understanding is start form the PLC understanding. PAC is referring to Programmable Automation Controller while PLC is referring to Programmable Logic Controller. Compare to traditional PLC solutions, the PAC reduces overall the system costs, space and give all the best features than PLC. PAC describes as a compact controller that combines the features and capabilities of a PC-based control system with the typical of Programmable Logic Controller(PLC). In the industry, a flexibility and reliable device capable of multi tasks is required to carry out complex electromechanical processes for instance in automotive industry. A programmable automation controller must perform the real time motion with multiple input/output arrangements.
The endless technology which has ability to encompass multiple tasks requiring I/O point monitoring, control, data, exchange via OPC, and integration of factory data with enterprise systems are required to leads to the migration of typical plant floor management to modern industrial application. The common applications are in manufacturing and process automation such as, machinery control in production assembly lines, or building automation such as, controlling lighting fixtures. In application type, the control system must interface with signals from simple actuators and sensors, manage interoperability using network devices and seamless data integration.