Patent · US Expired

Control system with changable time-shared execution of ladder and non-ladder programs

US4722043A · kind A · utility

12Cited by

9References

2Claims

0Family size

Assignee

FANUC CORPORATION · JP

Inventors

Tsuyoshi Nagamine · Hachioji, JP
Fumio Kawamura · Suita, JP
Shuji Toriyama · Setagaya, JP

Key dates

Filing date	Mar 26, 1986
Grant date	Jan 26, 1988
Priority date	—
Expiry date	Mar 26, 2006

Classification

Technology area (CPC G)Physics
CPC primaryG05B2219/13142
WIPO fieldControl
WIPO sectorInstruments

Abstract

The present invention allows a programmable controller in a stored program system to easily execute even complex sequence control. A memory (50) has stored therein a first program of the ladder type and a second program described in another program language such as PASCAL or FORTRAN. First and second setting devices (51) and (52) set the execution times for processing by the first and second programs, respectively. A management device (53) executes the processing according to the first and second programs alternately for the periods of time set by the first and second setting device (51) and (52).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.