Programmable logic controller provided with communication functions in a client-server architecture
US6721607B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 25, 2001 |
| Grant date | Apr 13, 2004 |
| Priority date | — |
| Expiry date | Jan 14, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B19/05
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A programmable logic controller system including a private operating system that does not support a TCP/IP protocol, and a communication module connected to a private communication bus and a TCP/IP network, and at least one intelligent module. The communication module includes TCP/IP connection and communication functions, a plurality of delegation services, and a transcoding and routing service configured to encode, decode, and route a request. The private communication bus includes a plurality of supported protocols. Further, the at least one intelligent module includes an HTTP server and at least one application having an application programming interface. The application programming interface is configured to use the TCP/IP connection and communication functions from a remote location. In addition, the plurality of delegation services are configured to enable the at least one application in the at least one intelligent module to delegate services to the communication module on the TCP/IP network.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.