Programmable controller with function chart interpreter
US4742443A · kind A · utility
32Cited by
5References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 28, 1985 |
| Grant date | May 3, 1988 |
| Priority date | — |
| Expiry date | Mar 28, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/13105
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A programmable controller stores a user control program which is comprised of a plurality of conventional ladder programs and a structure chart program. A microprocessor executes a structure chart interpreter routine to interpret the structure chart program and to thereby create an active state list which indicates the ladder programs that are to be executed. The same microprocessor with the assistance of a bit processor also executes the ladder programs which are indicated on the active state list to control a machine connected to the programmable controller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.