Fluke PM3370B user manual Status

6 - 48 THE CPL PROTOCOL

6.7 STATUS

The Status word gives more information when the acknowledge is non- zero. A certain bit in the word can be found by performing a logical AND of the status word with the mask defined below.

(Logical AND: the words are compared bitwise and only when both bits are 1, the result bit is 1)

Example:

Status = 38 and must be checked for ’data out of range’ (4)

38	=	0000 0000 0010 0110
4	=	0000 0000 0000 0100
logical AND		0000 0000 0000 0100
First status word: CPL status
Bit	Mask	Value	Meaning
Position	hex	dec
0	&H0001	1	Unknown header
1	&H0002	2	Data format of body is wrong
2	&H0004	4	Data out of range
3	&H0008	8	Invalid instruction
4	&H0010	16	-- reserved, normally zero
5	&H0020	32	Invalid number of parameters
6	&H0040	64	Wrong number of databits
7	&H0080	128	Flash ROM not present
8	&H0100	256	Invalid Flash software
9	&H0200	512	Conflicting oscilloscope settings
10	&H0400	1024	User request, front panel key pressed
11	&H0800	2048	Flash write error
12	&H1000	4096	-- reserved, normally zero
13	&H2000	8192	Invalid password entered
14	&H4000	16384	-- reserved, normally zero
15	&H8000	32768	Next status available

Second status word: Auto calibration status

Third status word: Acquisition status