| 摘要 |
<p>PROBLEM TO BE SOLVED: To support access permission for each peripheral equipment concerning access management by solving the problem that while there used to be an instruction to inhibit access from the peripheral equipment to a memory and an instruction to release it, memory access management used to be executable for all the peripheral equipment and not executable for each peripheral equipment in a conventional manner, and that once access is inhibited, all the peripheral equipment used to be unable to perform access until the access inhibition is released, resulting in the generation of standby time until the access is permitted when a plurality of peripheral equipment is connected.SOLUTION: A programmable controller for performing the sequence control of a load device includes: communication means for transferring data with external equipment; determination means for determining the permission or non-permission of data communication in the communication port of the communication means; and ladder program creation means for creating the determination of the permission or non-permission of the data communication by a ladder program.</p> |
