| 摘要 |
The invention provides a computer system for realtime control of machines. The computer system continually switches between a realtime programs EP providing control of peripheral devices A<SUB>1</SUB>, A<SUB>n</SUB>, including control and/or regulation, and other programs within the realtime clock periods. The computer system has communications system KS and a a control system SS connected to the peripheral devices A<SUB>1</SUB>, A<SUB>n</SUB>, particularly motor driver devices, over the communications system KS. A realtime clock signal T is generated from an independent cyclic communications clock T 2 of the communications system KS, which has a communications processor KP that operates in realtime. When the control processor SP is remote from the communications processor KP, the realtime clock T may be regenerated an incoming bus clock signal B by a counter Z having upper and lower thresholds K 2 and K 1.
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