Hardware-based RS485 (radio sensing 485) automatic transceiving control method and circuit
A RS485, automatic transceiver technology, applied in the direction of duplex signal operation, can solve the problems of reducing bus anti-interference ability, increasing system power consumption, no driving ability, etc., to improve real-time and anti-interference ability, and improve electromagnetic compatibility. capability, the effect of improving system reliability
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[0039] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0040] see Figure 4 . In this embodiment, the inverting circuit adopts a logical NOT gate; the clock generating circuit is composed of a Schmitt trigger (4093), a resistor R1, and a capacitor C1; the counting circuit adopts a counter (4024); the trigger circuit adopts a D flip-flop (4013 ). The input terminal of the logic NOT gate is conn...
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