Abstract:
A safety controller provides for reliable mixed execution of standard and safety control programs held in a common memory by providing a hardware lock that is locked at times when the safety program is not executing to minimize potential corruption of the safety program by the standard program.
Abstract:
A flash programmable microprocessor-based control module is operated in a manner to protect the integrity of event data stored in the programmable memory of the module while permitting authorized manufacturing and field alteration of the programmable memory with a Download and Execute routine. The Download and Execute routine is resident in a designated sector of the module's read-only memory, and download access to the module's random access memory after module manufacture has been completed is denied. During manufacture of the module, and during field programming of the controller prior to the writing of event data, the programmable memory may be externally altered by an authorized service tool by transferring the Download and Execute routine from read-only memory to random access memory for execution by the module's microprocessor, and downloading the new data or code over a data link coupling the service tool to the module. After event data has been written to the programmable memory, external requests to alter the programmable or read-only memories are denied, and the transfer of the Download and Execute routine to random access memory is not permitted.
Abstract:
A method of detecting manipulation of a programable memory device of a digital controller for a motor vehicle is described; data and control programs for operation of the controller and for control/regulation of certain functions of the motor vehicle can be stored in the memory device. To permit especially reliable detection of manipulation in the simplest possible way, in conjunction with each programing/reprograming operation of the programable memory device, information regarding the programing/reprograming operation is stored in a separate memory area of the memory device where only reading and programing are possible, and in order to detect manipulation, the content of the separate memory area is read out and compared with given information.
Abstract:
A motion control system includes a motion control application generated by a motion control system designer, a motion control component defining an application programming interface comprising an API function, and a security system comprising security settings for determining access by the motion control application to an API function of the application programming interface. A motion control application comprises an API function call. The motion control application makes an API function call to the motion control component. The motion control component generates a motion control command based on the API function call. The security system limits generation by the motion control component of a motion control command based on the security settings. The motion device performs the motion task based on the motion control command.
Abstract:
A system for communicating with a motion control system, comprising a set of motion operations, a set of functions, a set of security levels, and client software. The functions are capable of causing the motion control system to perform at least one motion operation. The client software is capable of calling at least one of the functions. The ability of the client software to call at least one of the functions is restricted based on at least one of the security levels.
Abstract:
A method of detecting manipulation of a programmable memory device of a digital controller for a motor vehicle is described; data and control programs for operation of the controller and for control/regulation of certain functions of the motor vehicle can be stored in the memory device. To permit especially reliable detection of manipulation in the simplest possible way, in conjunction with each programming/reprogramming operation of the programmable memory device, information regarding the programming/reprogramming operation is stored in a separate memory area of the memory device where only reading and programming are possible, and in order to detect manipulation, the content of the separate memory area is read out and compared with given information.
Abstract:
A system for communicating with a motion control system, comprising a set of motion operations, a set of functions, a set of security levels, and client software. The functions are capable of causing the motion control system to perform at least one motion operation. The client software is capable of calling at least one of the functions. The ability of the client software to call at least one of the functions is restricted based on at least one of the security levels.
Abstract:
A safety controller provides for reliable mixed execution of standard and safety control programs held in a common memory by providing a hardware lock that is locked at times when the safety program is not executing to minimize potential corruption of the safety program by the standard program.