Multi-tasking operation system for industrial controller

Details Multi-tasking operation system for industrial controller Multi-tasking operation system for industrial controller

1997-11-10

1999-12-28

Sheikh, Ayaz R.

Electrical computers and digital processing systems: multicomput

Computer-to-computer data routing

Least weight routing

709107, 710 7, 712231, 712241, G06F 900, G06F 946

Patent

active

060094540

ABSTRACT:
A multi-tasking operating system for real-time control of industrial processes integrates ladder type programs and state-type programs by viewing each as a series of instructions with an implicit pointer list pointing to the next instruction. A fixed number of instructions of each program task are executed after which the effective pointer to the next instruction is stored toward the next time that task is invoked. Multiple tasks that need to be coordinated can be linked with subtasks that can be guaranteed complete execution by allocating sufficient instructions to those subtasks.

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