Flexible connection of teaching devices to programmable controllers

摘要

An apparatus provides selective communication between multiple programmable robot controllers and one or more teaching devices connected by a network. The network controls communication between the teaching devices and the controllers including active tasks and passive tasks for preventing communication of active tasks between any of the controllers and more than one of any of the teaching devices. The network permits communication of the passive tasks between any of the controllers and one of the teaching devices communicating active tasks with another one of the controllers.