In this paper, the development and implementation of a client software package for process control is presented. The proposed software is based on a client server model under an Intranet architecture. The architecture is proposed for a telecontrol system of a real process, including the possibility of integrating I O devices with data networks based on open protocols such as TCP IP. This protocol allows the implementation of control systems using a low cost alternative. Some experiences on a pasteurization laboratory plant are presented to show the proposed architecture performance.