Interface Method for Improving Communication Performance of Personal Computer (PC) and Programmable Logic Controller (PLC)

摘要

The present invention relates to an interface method for improving the communication performance of a personal computer (PC) and a general-purpose programmable logic controller (PLC). The interface method according to the present invention comprises the steps of (a) setting an input buffer, (b) receiving data from a personal computer (PC), determining whether the input buffer is empty (c), and And storing (d) data received from the personal computer (PC) in the input buffer when it is determined in step (c) that the input buffer is empty. The present invention improves the communication performance between the personal computer (PC) and the programmable logic controller (PLC), and also has the effect of improving the network configuration of the programmable logic controller (PLC) in software.