A method for operating a machine for processing plastics and other plasticisable materials such as pulverulent and/or ceramic compositions, the machine comprising, - a mould opening and closing unit for opening and closing an injection mould having at least one mould cavity for manufacturing an injection moulding corresponding to a shape of the at least one mould cavity, - an injection moulding unit having means for plasticising and injecting the plasticisable material into the mould cavity, - a controller of the machine which controller contains expert knowledge about operation of the injection moulding machine and any present peripheral devices thereof and about manufacture of injection mouldings using injection moulding technology, in order to manufacture an injection moulding with reference to injection moulding parameters with, if necessary, interactive contact with an operator, comprising the steps: - providing information about a geometry for the injection moulding or of the mould cavity to a moulding assistant within the controller, - calculating, by means of the moulding assistant at the machine, plant and process parameters required for manufacturing the injection moulding as injection moulding parameters before an injection moulding is produced for the first time and without prior offline simulation of the injection moulding, - testing of the plausibility of the calculated plant and process parameters by means of the moulding assistant, as to whether, using the information provided, an injection moulding can be manufactured on the machine, - if plausibility testing reveals that the injection moulding cannot be manufactured in this manner, establishing interactive contact with the operator to obtain further information which enables manufacture of the injection moulding with modification of the plant and process parameters, and repeating the last two steps, - if modification of the information is not possible, notifying the operator by means of the moulding assistant that the injection moulding is not manufacturable using this injection moulding machine, - if plausibility testing reveals that the injection moulding is manufacturable, operating the injection moulding machine using the calculated plant and process parameters for manufacturing the injection moulding. - a mould opening and closing unit for opening and closing an injection mould having at least one mould cavity for manufacturing an injection moulding corresponding to a shape of the at least one mould cavity, - an injection moulding unit having means for plasticising and injecting the plasticisable material into the mould cavity, - a controller of the machine which controller contains expert knowledge about operation of the injection moulding machine and any present peripheral devices thereof and about manufacture of injection mouldings using injection moulding technology, in order to manufacture an injection moulding with reference to injection moulding parameters with, if necessary, interactive contact with an operator, - providing information about a geometry for the injection moulding or of the mould cavity to a moulding assistant within the controller, - calculating, by means of the moulding assistant at the machine, plant and process parameters required for manufacturing the injection moulding as injection moulding parameters before an injection moulding is produced for the first time and without prior offline simulation of the injection moulding, - testing of the plausibility of the calculated plant and process parameters by means of the moulding assistant, as to whether, using the information provided, an injection moulding can be manufactured on the machine, - if plausibility testing reveals that the injection moulding cannot be manufactured in this manner, establishing interactive contact with the operator to obtain further information which enables manufacture of the injection moulding with modification of the plant and process parameters, and repeating the last two steps, - if modification of the information is not possible, notifying the operator by means of the moulding assistant that the injection moulding is not manufacturable using this injection moulding machine, - if plausibility testing reveals that the injection moulding is manufacturable, operating the injection moulding machine using the calculated plant and process parameters for manufacturing the injection moulding.