KUKA.ArcTech is a welding technology package for controlling power sources with program number control. This package has been specially developed for use with cooperating robots and enables the simultaneous operation of up to three robots that are in communication with one another. The package is further characterized by its high degree of operating convenience. The setup procedures are simplified by means of a configuration tool. Safe operation with the Shared Pendant is supported by the wide range of available operating and simulation modes for convenient teaching, and detailed, cause-specific messages including indication of the originator. The technology package is also available, with all its user-friendly features, to users of single applications.