1 was released in 1994 | |
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Other sensors on the same line will not respond until called and typically stay in "sleep mode" low power mode , until called | Advantages [ ] The specification document describes a number of advantages including:• The standard provides guidelines on transient protection and does not require the use of a specific connector |
Only the pre-configured sensor matching that address will respond handshake.
Electrical interface characteristics such as number of conductors, voltage logic levels and transitions, and line impedance | It was designed by a coalition which included the 's HIF and a group of private companies |
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3 was released in April 2000 and defines:• Communications protocol such as means of establishing contact with a specific address sensor , the measurement command set, sensor response behavior, byte frame format and allowed characters | Applications [ ] The protocol is most commonly supported by hydrographic sensors level and flow , water quality sensors, meteorological instruments, soil moisture and plant physiology |