Program analysis circuitry for multi-tasking industrial controll

Details Program analysis circuitry for multi-tasking industrial controll Program analysis circuitry for multi-tasking industrial controll

1995-06-12

1997-04-08

Gordon, Paul P.

Boots, shoes, and leggings

364131, 364184, 39518301, 395672, 395733, G06F 1900, G06F 946

Patent

active

056194099

ABSTRACT:
A multi-tasking industrial controller for real-time control of machinery and the like permits the use of both periodic and event driven tasks by establishing a hierarchy of both task types in the form of priorities that resolve conflicts between events of the same and different types. Each task may access a common "global" memory area to communicate information and timing with other tasks and so as to coordinate the overall industrial control process. Trouble-shooting of the task software is made possible by a hardware address monitor which may be programmed to identify access of a particular memory location or range by any task and to record information about the particular task causing that global memory access.

REFERENCES:
patent: 3789365 (1974-01-01), Jen et al.
patent: 5295260 (1994-03-01), Pribnow
patent: 5339425 (1994-08-01), Vanderah et al.
patent: 5392207 (1995-02-01), Wilson et al.

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