System and method for transmission of data, in particular operating and monitoring data of an automation system, on the Internet with an assymetrical connection

摘要

The method involves sending a first connecting request (20) for a first transmission channel (6a, 7a, 8a) from a client (1), especially an operating- and monitoring system (1), over an internet connection (6, 7, 8) to an internet server (4) of an automation system (5). A second connecting request (22) for a second transmission channel (6b, 7b, 8b) is sent from the client to the internet server, whereby the first and the second transmission channels are provided for a timewise independent, bidirectional transmission and reception of usage data (15,16,17) between the client and the internet server over the internet (10).