Non-volatile memory device for a programmable controller

Details Non-volatile memory device for a programmable controller Non-volatile memory device for a programmable controller

1985-02-28

1987-12-15

Heckler, Thomas M.

Boots, shoes, and leggings

365228, G06F 100, G06F 1300

Patent

active

047137568

ABSTRACT:
A nonvolatile memory storage device for a programmable controller to provide an archival back-up for user programs with the use of a battery or other alternate back-up power source. The device can be attached to the programmable controller using a frangible tampering indicator that will break on the removable of the device from the programmable controller.

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Koch, Bud, "Nonvolatile Static RAM `Snapshots` Data into E.sup.2 PROM", Electonic Products, Dec. 1980, p. 75.
Modicon, Product Sales Literature for Modicon P371 Program Pack.
Modicon, Operating Guide for Modicon P371 Program Pack, pp. 8-1, 8-2.
Xicor, Inc., Specification Sheets for Xicor NOVRAM Memories, Nonvolatile Static RAMS, Mar. 1982, pp. 1-6.

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