Abstract: A portion of executable code generated from a general-purpose high-level language can be changed easily while the executable code is running. An engineering apparatus (10) of the present disclosure includes an instance management unit (103) and a compiler/linker (104). When a control application is edited while the engineering apparatus (10) and target hardware (20) are connected online, the instance management unit (103) generates a list for control application switching and a program for control application switching. The list and the program are generated from the control application and expressed in a second programming language. The compiler/linker (104) generates executable code based on the list, the program, and a control service program. When the executable code is downloaded onto the target hardware (20), the control service program causes the program for control application switching to be executed on the target hardware (20).

Abstract: A portion of executable code generated from a general-purpose high-level language can be changed easily while the executable code is running. An engineering apparatus (10) of the present disclosure includes an instance management unit (103) and a compiler/linker (104). When a control application is edited while the engineering apparatus (10) and target hardware (20) are connected online, the instance management unit (103) generates a list for control application switching and a program for control application switching. The list and the program are generated from the control application and expressed in a second programming language. The compiler/linker (104) generates executable code based on the list, the program, and a control service program. When the executable code is downloaded onto the target hardware (20), the control service program causes the program for control application switching to be executed on the target hardware (20).

Abstract: An electronic device includes a memory protection unit configured to protect an access to a register of a device arranged in an address space. An operating system sets an access right to the register by using the memory protection unit. A process requests the operating system to operate the device when the process operates the device, and the operating system makes an access to the corresponding register in accordance with the request for the operation to operate the device.

Abstract: An electronic device includes a memory protection unit configured to protect an access to a register of a device arranged in an address space. An operating system sets an access right to the register by using the memory protection unit. A process requests the operating system to operate the device when the process operates the device, and the operating system makes an access to the corresponding register in accordance with the request for the operation to operate the device.