| 摘要 |
<p>In order to obtain a supervisory system that can send event information of an object system from a server to a client, the client is downloaded from the server with a program that issues a POST request to the server. After the POST request is received from the client, the server transmits the event information to the client in the form of a POST reply, if the event information is kept or present in the server. <IMAGE></p> |
