Conventional connection to the injection moulding machine occurs via standard alarm contact and standard setback input. This creates a highly efficient safety solution that ensures a high level of process safety using the simplest means. Only two paired control lines are required, by means of which the machine can be stopped if there is a control device alarm. For machine faults, the control device is lowered. This variant is a cost-efficient safety solution, which ensures that the machine can be operated unsupervised without problems.