| 摘要 |
PURPOSE:To speed up response speed by supervising the existence of the change of input information of a specific device at a prescribed timing during the execution of a control instruction, and when the input information is changed, by executing the control instruction related to the input information immediately. CONSTITUTION:An operation part 1 reads the stored contents of an input information part 6 during the execution of processing of input information, and reads the status of a contact B which requires high speed processing when a forced transfer instruction INB is read in. The read contents are compared with the contents read from an input circuit in the preceeding time, and when both contents coincide with each other, the contents of a program counter 3 are counted up by +1 while regarding that the contact B has no change. In case of inconsistency, it is discriminated that the contact B is changed and the contents of the program counter 3 are shunted to and stored in a register 10 and the leading address of a memory, in which a control instruction related to a circuit Q is stored, is set up in the program counter 3. |
