Romilly's HART® and Fieldbus Message Board
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Re: HART 7 packet structure
Message posted by Chris Kantzes (chris.kantzes@emerson.com : 144.191.148.3) on 18 December 2013 at 19:24:42.
in reply to: HART 7 packet structure posted by shekar on 28 November 2013 at 16:57:02.
HART commands greater than 256 utilize command expansion. In this case, 0x1F (31) is placed in the command byte for the frame, and the first 2 data bytes (after the byte count) contain the actual command number.
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