Sequence controlling method
US5373438A · kind A · utility
0Cited by
7References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 26, 1993 |
| Grant date | Dec 13, 1994 |
| Priority date | — |
| Expiry date | Aug 26, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/15107
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
In the sequence program (ladder circuit), in order to give a common address between contacts of the ladder circuit longitudinally and store states before and after the processing of the contact in the ladder circuit, two types of memories corresponding to addresses at the both ends of the contact are provided and a compiler for classifying the processing into the five types and a sequence execution unit for processing a machine language of the compiler are further provided so that execution can be made even if an output instruction is provided in an intermediate portion of the ladder circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.