Safety controller with hardware memory lock

Details Safety controller with hardware memory lock Safety controller with hardware memory lock

2007-06-05

2007-06-05

Sough, Hyung (Department: 2188)

Electrical computers and digital processing systems: memory

Storage accessing and control

Shared memory area

C711S163000, C711S164000, C700S018000, C700S019000, C700S020000, C700S021000

Reexamination Certificate

active

10661885

ABSTRACT:
A safety controller provides for reliable mixed execution of standard and safety control programs held in a common memory by providing a hardware lock that is locked at times when the safety program is not executing to minimize potential corruption of the safety program by the standard program.

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patent: 6026016 (2000-02-01), Gafken
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patent: 2002/0133680 (2002-09-01), Rosenquist et al.
patent: 2003/0051053 (2003-03-01), Vasko et al.
patent: 2003/0051203 (2003-03-01), Vasko et al.
patent: 2003/0145120 (2003-07-01), Vasko et al.
patent: 2003/0208283 (2003-11-01), Vasko et al.

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