The SG811 communication interface has been developed to make communication with the most common devices, RS232 and RS-485 simple and reliable, but also to communicate with our instruments that use the Electric Current Loop standard: this electrical standard makes it possible to establish a reliable connection even in the presence of strong external disturbances The particularity of the Current Loop as the word itself says is that the transmission occurs by circulating a current: the presence of the current indicates a high logic level and its absence the low logic level, obviously the verso will be in two ways to differentiate transmission from reception.
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