APPARATUS AND METHOD FOR HARDWARE INTERLOCK BY VIRTUAL INTERLOCK

摘要

PURPOSE: A hardware interlock device and method using a virtual interlock is provided to assign a virtual IO to the hardware by linking the each point of the hardware with the address of the virtual IO. CONSTITUTION: A virtual interlock processing unit(20) links the IO point of the hardware with the address of the virtual IO map. The virtual interlock processing unit assigns the virtual IO to the IO point of the hardware and carries out the virtual interlock processing. An alarm generating unit(30) compares the set value and the measured value for the virtual IO value. The alarm generating unit generates the alarm when the error is generated.