Panametrics HydroProII, Руководство пользователя

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HygroPro
II
User's Manual 45
Appendix A. HygroPro
II
HART
®
Field Device Specification
Bytes 4 & 5 are reserved for future use, Byte 4 is for generic warnings, Byte 5 for generic failures.
Byte 6 is the Extended Device Status, which, as stated above, the Panametrics HygroPro
II
never sets and are
always 0.
Byte 7 is for the Device Operating Mode, the Panametrics HygroPro
II
only has one operating mode and as such does
not use this byte, all bits are 0.
Bytes 8, 9, 11, and 12 are standardized status bits that the Panametrics HygroPro
II
does not make use of, they are all 0.
Byte 10 is the Analog Channel Saturated Byte, if the Loop Current is saturated the lowest bit will read 1, otherwise all
bits are 0.
Byte 13 is the Analog Channel Fixed Byte, if the loop current is fixed then the lowest bit will read 1, otherwise all bits
are 0.
"Reserve/Not used" bits are always set to 0.These bits are set or cleared by the self-test executed at power up, or
following a reset. They are also set (but not cleared) by any failure detected during continuous background
self-testing.
HART Additional Device Status
Byte Bit Error Description Class Device Status Bits Set
3 0 Reserved Error 4, 7
1 Reserved Error 4, 7
2 Reserved Error 4, 7
3 Reserved Error 4, 7
4 Reserved Error 4, 7
5 Reserved Error 4, 7
6 Reserved Error 4, 7
7 Active TW error Error 4, 7