Electrical computers and digital processing systems: multicomput – Computer-to-computer session/connection establishing
Reexamination Certificate
2007-11-27
2007-11-27
Nguyen, Phuoc (Department: 2143)
Electrical computers and digital processing systems: multicomput
Computer-to-computer session/connection establishing
C709S203000, C709S225000, C709S230000, C709S237000
Reexamination Certificate
active
10343639
ABSTRACT:
OPC data is transmitted via data networks, in particular the Internet. A bi-directional data connection via the Internet in both directions is enabled even across firewalls and starting from an OPC client, which is not visible as a server on the Internet. To achieve this, a first connection request for establishing a first transmission channel is sent from a first data processing device of an OPC client, via a data connection, to an OPC server of an automation system. The OPC server responds to the request using a second transmission channel. The data connection is thus kept open permanently, allowing data to be sent and received bi-permanently, allowing data to be sent and received bi-directionally, the operations being temporally independent of each other, between the OPC client and the OPC server by at least one data network, in particular, the Internet.
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Bauer Thomas
Heymann Roland
Schmolka Heinz-Christoph
Sebald Marcus
Talanis Thomas
Nguyen Phuoc
Siemens Aktiengesellschaft
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