Romilly's HART® and Fieldbus Message Board

Re: Extended command numbers

in reply to: Extended command numbers posted by Antje Teunissen on 02 December 2011 at 12:44:36.

I think the answer is that it *must* send the Invalid Extended Command code. This is implied by two parts of the specs:

HCF_SPEC-307, 6.21 RC #20: Invalid Extended Command Number. The Extended Command Number was less that 512.

HCF_TEST-1 (towards the end):
SEND Command 31 with Data = 0x00, 0x03
...
IF (RESPONSE CODE != 'Invalid Extended Command Number')
THEN test result is FAIL
END IF

Follow Ups:

• Re: Re: Extended command numbers kees-b 2013/09/07 22:51:40 (0)
• Re: Re: Extended command numbers Antje Teunissen 2011/12/05 08:06:43 (0)

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