CPU OF PLC, SYSTEM PROGRAM FOR PLC, AND RECORDING MEDIUM STORING SYSTEM PROGRAM FOR PLC

摘要

This system program includes, as an execution control process for a control program: an owner-side initiation process to initiate execution of an owner-side control program; a copying process to copy a global variable, which is rewritten by the owner-side control program when execution of the owner-side control program terminates, from a global variable range to a synchronous buffer that corresponds to the global variable; and a referrer-side initiation process to initiate execution of a referrer-side control program.