METHOD FOR ACTUATING VALVES FOR CONTROLLING A FLOW PATH AND MACHINES, ESPECIALLY MEDICAL TREATMENT MACHINES

摘要

The invention relates to a method for actuating valves for controlling a flow path of especially a medical treatment machine, comprising a plurality of processes for establishing flow paths by actuating a group of valves, every process requiring a group of valves that are suitable for carrying out said process, so that other processes cannot change the switched state of said valves, and every process deciding on the release of the valves required by it. The invention further relates to a method for monitoring the actual and/or planned state of a plurality of valves in the control of a flow path of an especially medical treatment machine. Said method comprises the following steps: determining the actual and/or planned switched state of the valves, determining the connections resulting from the switched state of the valves, comparing the resulting connections to a predetermined plurality of inadmissible connections. The invention further relates to machines, especially medical treatment machines, which comprise corresponding valve or valve actuator controls.