Hello, i am a instrument engineer and for the first time i am about to commission a profibus system. Please could you describe in laymens terms how profibus operates. I know profibus Dp is used for devices that require a larger data transmission eg plcs and valves., where as PA is used on transmitters and has its own power supply. What is the actual data that is being sent? say for example 0-100% on a level transmitter, would this be an actual bit of data per 1%. Analogue devices work as so many mA per % so how does profibus do this?Also how does the DP/PA converter work? Any help would be greatley appreciated, but remember to answer in the easiest way for me to understand as possible.Regards
