Industrial controller and network card with buffer negotiation
US6463338B1 · kind B1 · utility
51Cited by
6References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 30, 1999 |
| Grant date | Oct 8, 2002 |
| Priority date | — |
| Expiry date | Sep 30, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S715/968
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An interface for a network communication card for industrial controllers uses a dual-port memory that may be re-partitioned by values communicated through the dual-port memory itself. A default partitioning and a non re-partitionable common area allow flexible re-partitioning without disrupting the communication necessary for the partition to take place. Negotiation between the controller and network card allow maximum flexibility in re-partitioning while respecting partitioning limits characteristic of the network card and its network.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.