WebAug 10, 2015 · I CS 93 030P 41囝国中华人民共和国国家标准G B／T 23485--2009城镇污水处理厂污泥处置混合填埋用泥质D i sposalofsl udgef romm uni ci pal w ast ew at er treatm ent pl ant—Q ual i tyofsl udgef orCO —l andfi l l i ng2009—04—13发布2009—12-01实施宰瞀髁紫瓣警矬瞥霎发布中国国家标准化管理委员会仅111 RS-485, also known as TIA-485(-A) or EIA-485, is a standard defining the electrical characteristics of drivers and receivers for use in serial communications systems. Electrical signaling is balanced, and multipoint systems are supported. The standard is jointly published by the … See more RS-485 supports inexpensive local networks and multidrop communications links, using the same differential signaling over twisted pair as RS-422. It is generally accepted that RS-485 can be used with data rates up to 10 See more The EIA once labeled all its standards with the prefix "RS" (Recommended Standard), but the EIA-TIA officially replaced "RS" with "EIA/TIA" to help identify the origin of its standards. The EIA has officially disbanded and the standard is now maintained by the … See more RS-485 signals are used in a wide range of computer and automation systems. In a computer system, SCSI-2 and SCSI-3 may use this specification to implement the physical layer for … See more The RS-485 differential line consists of two signals: • A, which is low for logic 1 and high for logic 0 and, • B, which is high for logic 1 and low for logic 0. See more RS-485, like RS-422, can be made full-duplex by using four wires. Since RS-485 is a multi-point specification, however, this is not necessary or desirable in many cases. RS-485 and … See more Converters between RS-485 and RS-232 are available to allow a personal computer to communicate with remote devices. By using repeaters very large RS-485 networks can be … See more RS-485 does not define a communication protocol; merely an electrical interface. Although many applications use RS-485 signal levels, the … See more
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