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The working principle of the digital output module can be divided into the following steps:
1. Digital signal input
The digital signal input of the digital output module usually receives digital signals from sensors, controllers and other devices. These digital signals can be switching signals, pulse signals, counting signals, etc. The digital signal input converts these signals into binary signals for processing by the digital signal processor
2. Digital signal processing
Digital signal processor is the core part of digital output module, which is responsible for converting digital signal to analog signal output. Digital signal processor usually consists of microprocessor, memory clock and other parts. When the digital signal input receives the digital signal, the digital signal processor will process it, such as filtering, amplification, calculation and other operations, and then convert the processed signal into an analog signal output.
3. Analog signal output
The analog signal output end of the digital output module is usually a voltage output end, which can output analog signals, such as voltage, current, etc. The output value of the analog signal output is usually calculated according to the result of the digital signal processor. The output value of the analog signal output can be amplified and filtered by the external circuit to meet different application requirements.
In general, the working principle of the digital output module is to convert the digital signal to the analog signal output. The digital signal input receives the digital signal from the sensor, controller and other devices, and the digital signal processor processes it, and then converts the processed signal to the analog signal output. The analog signal output terminal can output analog signals such as voltage and current to meet different application requirements. Digital output module is widely used in industrial automation, instrumentation and other fields
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