Industrial controller with I/O mapping table for linking software addresses to physical network addresses
US5845149A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 10, 1996 |
| Grant date | Dec 1, 1998 |
| Priority date | — |
| Expiry date | Apr 10, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/23334
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An industrial controller having a number of addressable I/O modules, employs an I/O map table linking software addresses used for developing the control program to actual physical addresses of the I/O modules on a network. By employing software addresses for connection points to the control process, the program may be developed independent of the topology of the network connecting the processor to the I/O modules and changes in that topology may be made without affecting the control program, but simply by changing the I/O map table. A single change in the I/O map table re-connects an I/O module for all references in the control program.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.