Patent · US Active

Programmable controller

US8346378B2 · kind B2 · utility

2Cited by

6References

9Claims

0Family size

Assignee

OMRON CORPORATION · JP

Inventors

Akio Ono · Hiroshima, JP
Atsuko Takahashi · Tokyo, JP

Key dates

Filing date	Dec 23, 2009
Grant date	Jan 1, 2013
Priority date	—
Expiry date	Mar 18, 2031

Classification

Technology area (CPC G)Physics
CPC primaryG05B2219/1147
WIPO fieldControl
WIPO sectorInstruments

Abstract

The value of fixed cycle time is adjusted to an optimum value in a short period of time. In a second operational mode (MON) of a PLC, a series of a plurality of system processes are repeatedly performed with a change to a user program in a peripheral service process being allowed. A change to fixed cycle time to be compared with actual cycle time is prohibited in a first operational mode (RUN) but is allowed in the second operational mode (MON) and a non-operational mode (PRG).

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