Method and arrangement for selecting safety parameters to be monitored
AssigneeJohannes Heidenhain GmbH
InventorGerhard Mühlbauer
Life of this patent
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Abstract
A method and apparatus for monitoring a safety condition of a device, receive data from a plurality of operating-state detectors of the device selected on the basis of a specific configuration of the device to signal dangerous operating conditions of the device. Furthermore, to eliminate the need to completely redesign a safety monitoring program in response to modifications or expansions of the device, all the safety parameters are stored in one memory. The use of an exchangeable memory further simplifies modification of the system. A specific identifier is employed to rule out the use of an incorrect memory and a check sum for the memory contents allows detection of any unauthorized change in the memory contents.
Claims15
A method for determining a safety condition of a machine tool, comprising the steps of:
- determining which of a plurality of configurations of the machine tool is a current configuration of the machine tool;
- based on the current configuration of the machine tool, selecting specific safety parameters from a plurality of safety parameters stored in a memory, the plurality of safety parameters relating to safety conditions of the plurality of machine tool configurations;
- and
- monitoring the specific safety parameters of the machine tool.
An apparatus for monitoring a safety condition of a machine tool, wherein the machine tool includes a first plurality of mechanisms relating to safety conditions of the machine tool when the machine tool is in any of a plurality of configurations, comprising:
- a memory connected to a first processor in which the plurality of safety parameters relating to safety conditions of the plurality of machine tool configurations are stored;
- and
- the memory is connected to the plurality of detectors for selecting from the plurality of stored safety parameters specific safety parameters relating to the current configuration of the machine tool;
- and
- the first processor connected to the detectors that monitor the selected specific safety parameters corresponding to the current configuration of the machine tool.
Dependencies are inferred from the claim text.