Abstract: A controller for a machine tool or production machine is disclosed. The controller includes system software that implements a control function for the machine tool or production machine, real-time basic application software and real-time custom-designed application software for expanding the system software, and a software interface allowing the real-time basic application to access data and functions of the system software. The controller further includes a custom-designed software interface provided by the basic application software for communication between the basic application software and the custom-designed application software. With the disclosed controller, custom-designed application software can be integrated in the system software of the controller without detailed information about the system software of the controller.

Abstract: A nozzle, e.g. for an air sampler, is opened by remote control by the firing of a squib which breaks loose a silicone-sealing body which is normally pressed by spring force against the nozzle orifice. When the body breaks away, a closing frame swings into position and upon the remotely controlled firing of another squib allows a spring biased closing member to engage with its silicone seal the orifice.