This paper describes modifications of the existing conveyor with the aim of adding new functions while maintaining all the previous possibilities. The task of the conveyor is to move a plate to the desired position at the speed specified in the user interface. With the modification of conveyor is achieved a new way of communicating with other systems, from which the industrial robot RBI 120 is selected and a new display that contains the possibility of choosing three positions. By using digital signals, the robot can choose any position and receive the signal upon the arrival of the plate in that position. For the modification, a software tool TIA Portal V17 is used, which includes many functions for creating or editing the program code or interface and transferring these changes to devices. In the conveyor, there is an electrical cabinet with elements for supplying the system with power and elements that perform the functions of processing, managing and storing data to perform eager work. The electric motor and encoder that move the conveyor plate are controlled by the SINAMICS V90 frequency converter, and using the switch, the converter has the ability to communicate with the PLC device SIMATIC S7-1200 and HMI panel.