Title:
PULSE OUTPUT FUNCTION FOR PROGRAMMABLE LOGIC CONTROLLER WITH LINEAR FREQUENCY CHANGE
Document Type and Number:
WIPO Patent Application WO2004077176
Kind Code:
A3
Abstract:
Certain exemplary embodiments provide a method for producing pulsed outputs, comprising: automatically changing a first user-specified pulse frequency to a second pulse frequency; and automatically outputting a plurality of pulses from the programmable logic controller at frequencies varying between the first user-specified pulse frequency and the second pulse frequency according to a user-specified linear-time-rate variation
Inventors:
MCNUTT ALAN D (US)
Application Number:
PCT/US2004/005681
Publication Date:
March 03, 2005
Filing Date:
February 26, 2004
Export Citation:
Assignee:
SIEMENS ENERGY & AUTOMAT (US)
MCNUTT ALAN D (US)
MCNUTT ALAN D (US)
International Classes:
G05B19/05; G05B19/416; H02P8/14; (IPC1-7): G05B19/05; G05B19/40; H02P8/14
Domestic Patent References:
| WO2002065224A1 | 2002-08-22 |
Foreign References:
| DE4417424A1 | 1995-11-23 | |||
| DE19501652A1 | 1996-07-25 | |||
| US5977739A | 1999-11-02 |
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