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Method for initializing and utilizing a memory device for a plc

A storage device, recording technology, applied in the direction of program control, electrical program control, etc. in memory systems, sequence/logic controllers, etc.

Inactive Publication Date: 2007-02-28
SIEMENS IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Setting all record type fields in the data log to invalid can take a considerable amount of time for large logs

Method used

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  • Method for initializing and utilizing a memory device for a plc
  • Method for initializing and utilizing a memory device for a plc
  • Method for initializing and utilizing a memory device for a plc

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Embodiment Construction

[0015] definition

[0016] When the following terms are used herein, the accompanying definitions apply:

[0017] Suitable - to make suitable for a particular use or situation.

[0018] Equipment - An appliance or device used for a special purpose.

[0019] action - an action, operation, step and / or process or part thereof.

[0020] acquire - get or have.

[0021] acquire - get or have.

[0022] Suitable - to make suitable for a particular use or situation.

[0023] add-combine.

[0024] Add - The operation of adding something up.

[0025] append - An operation or procedure to add.

[0026] Equipment - An appliance or device used for a special purpose.

[0027] Relevant - pertaining to.

[0028] automatically - performed via an information device in a manner substantially independent of user influence or control.

[0029] able - able (in at least some embodiments).

[0030] Including - including but not limited to.

[0031] closest - the logically closest.

[0032...

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PUM

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Abstract

Certain exemplary embodiments comprise a method comprising a plurality of activities comprising: at a programmable logic controller comprising a memory device, receiving a request to create a data log that is adapted to receive data from a process; initializing the data log by writing to the data log a head marker code in the record type field of a first record and an invalid code in the record type field of a last record of the data log, the last record logically preceding and logically adjacent to the first record.

Description

[0001] Cross References to Related Applications [0002] This application claims pending U.S. Provisional Patent Application Serial No. 60 / 546,153 (Attorney Docket 2004P02744US), filed February 20, 2004, pending U.S. Patent Application Serial No. 10, filed October 15, 2003 / 685,819 (Attorney Docket No. 2002P20757US01), pending U.S. Patent Application Serial No. 10 / 685,521 (Attorney Docket No. 2002P20758US01) filed October 15, 2003, and pending Priority of US Patent Application Serial No. 10 / 622,259 (Attorney Docket 2002P20760US01 ), and is hereby incorporated by reference in its entirety. Background technique [0003] Programmable logic controllers (PLCs) may utilize memory devices for storage. The storage device, which may be a memory cartridge, may be an Electronically Erasable Programmable Read Only Memory (EEPROM) device. A storage cartridge may be used to store configuration information for the PLC and / or data obtained by the PLC. Data obtained by the PLC may be stored...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/05G06F11/00G06F12/00
Inventor T·L·福尔顿M·S·博格斯S·M·豪斯曼W·H·约翰逊
Owner SIEMENS IND INC
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