PROGRAM CONTROLLER

摘要

PURPOSE:To easily change the contents of a program at a real time by receiving program data from another device and applying an instruction code constituting the program data to a program control means. CONSTITUTION:A CPU 1 to be the program control means for forming a control command in accordance with a program is connected to a program data receiving part 3 through a CPU interface part 2 and fetches a program instruction code. The receiving part 3 receives program data from a master device (program sending device) 5 through a communication channel 4 and sends the received data to the interface part 2. The CPU 1 is connected to a data memory 7 and an I/O controller 8 through a data bus 6 and executes the storage of respective data and the control of the I/O unit 9.