You Can Get More Diagnostics from Some HART 5 Devices Than from Some HART 6 or HART 7 Devices
Regarding "The Long Greenfield" in the August issue: "Complex, macrocycle calculations" are not required for fieldbus on DeltaV. Also, "complex fieldbus devices" are not the case with DeltaV, since with a human-centered design dashboard, Foundation has the same look and feel as a 4-20 mA/HART device. DeltaV makes fieldbus very easy, eliminating marshalling cabinets, marshalling signals virtually from software, etc. Also, it's possible to get as much diagnostics from a HART 5 device as a HART 7 device. The diagnostics aren't dependent on the HART version. In fact, you can get more diagnostics from some HART 5 devices than from some HART 6 or HART 7 devices.
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