Communication Modules Profibus is functional as a plant automation module that can work well with the help of a process control. It allows for a digital network and enables the communication between the control system and field sensors. It includes a cost effective method and technique. Communication Modules Profibus has low installation cost. It is easy to find faults with this module. This is of an Ethernet communication standard. The said solution allows for an advanced process control as well as optimum process measurement. This is utilized to link computer systems in a workplace of network.