| 摘要 |
<p>PROBLEM TO BE SOLVED: To display a graphic image in each machine sort of an unknown PLC and a graphic image in each node on a tool screen in a programmable controller(PLC) system for executing network management. SOLUTION: The PLC 10 has a means for storing plural graphic image data in a graphic image data storing part 5 and transmitting the data to a tool 12. In the case of displaying a graphic image sent from the PLC 10, the tool 12 judges whether the necessary graphic image data are stored in the storing part 5 or not, and when the data are stored, displays the data. When the data are not stored, the tool 12 requests the transmission of the graphic image data to the PLC 10, stores the data and displays the data on a display part.</p> |
