Abstract: This paper shows the implementation of a system to control the force of a servo gun while welding using a Programmable Logic Controller [PLC], a servo motor and a servo drive. The system depends on the software provided by Rockwell i.e. Ultraware to control the servo motor through the servo drive. By controlling the welding force we can improve the quality of the weld and hence the efficiency will also increase.

Keywords: PLC: Programmable Logic Controller, SCADA: Supervisory Control and Data Acquisition, Squeeze and Hold time, OPC server.