A test system (10) is coupled to a control system (20) in a manner which allows the test system to communicate with and drive the control system by sending and receiving signals via both the controller-I/O communication channel (160) and the field I/O connectors (225). The test system (10) is used to...http://www.google.fr/patents/US6904380?utm_source=gb-gplus-shareBrevet US6904380 - Simulator cart