Programmable controller system

A programming controller and control program technology, applied in the field of PLC system, to achieve the effect of improving the safety level
CN100474325CActive Publication Date: 2009-04-01ORMON CORP +1
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
ORMON CORP
Publication Date
2009-04-01

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Abstract

A programmable controller system is formed by connecting a personal computer having an aid device program module installed to serve as an aid device for development of control program to a programmable controller having password protect function. A hardware key storing a specified password code is detachably attached to the personal computer. The aid device program module checks whether or not software module with a function of certifying a hardware key exists and if it is found to exist, it is linked as a part of the aid device program module and the function of certifying the hardware key is caused to operate.
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Description

technical field

[0001] The present invention relates to a PLC system configured by connecting a programmable controller (hereinafter referred to as PLC) and a personal computer functioning as a control program development support device via communication means, and particularly relates to a PLC system having a user authentication function. Background technique

[0002] Conventionally, a PLC system configured by connecting a programmable controller (hereinafter referred to as PLC) and a personal computer functioning as a control program development support device via communication means is known.

[0003] An example of such a PLC system Figure 15 shown. As shown in the drawing, this PLC system is configured by connecting PLC2 and a personal computer 1a functioning as a control program development support device 1 through communication means (for example, RS232C, etc.). In addition, in the figure, A1 is a password storage area, and A2 is a user program storage area. [0004...

Claims

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