Abstract: A method for operating a multiple axis machine includes controlling drives of the machine with a machine control system and monitoring the machine with a fail-safe control system having first and second redundant channels. Each of the first and second channels receives first input target values and first input actual values from the machine control system, and compares first reference target values (based on the first input target values) with first reference actual values (based on the first input actual values). A fault reaction is triggered if there is a deviation between the compared values that exceeds a specified tolerance. The first input values comprise reference position values of a machine-fixed reference or time derivatives thereof, and the machine control system determines target and/or actual reference position values based on a transformation between reference position values of the machine-fixed reference and axial position values of the machine.

Abstract: A method for operating a multiple axis machine includes controlling drives of the machine with a machine control system and monitoring the machine with a fail-safe control system having first and second redundant channels. Each of the first and second channels receives first input target values and first input actual values from the machine control system, and compares first reference target values (based on the first input target values) with first reference actual values (based on the first input actual values). A fault reaction is triggered if there is a deviation between the compared values that exceeds a specified tolerance. The first input values comprise reference position values of a machine-fixed reference or time derivatives thereof, and the machine control system determines target and/or actual reference position values based on a transformation between reference position values of the machine-fixed reference and axial position values of the machine.

Abstract: The hard-wired non-maskable interrupt (10) of a conventional processor (7), i.e. NMI or IOCHCK, is used to bypass programed interrupts to obtain immediate, predictable access to the processor and avoid the long and uneven access times of programmed interrupts. The NMI interrupts are controlled by a programmable distributor (8). This allows the conventional computer system to operate on a real-time basis, since all the interrupts take the same time.