HRT-710 User Manual (Version 1.24, June/2015) PAGE: 98
Appendix A: HART Command
The often HART universal commands are listed as below.
Command 0: Read Unique Identifier
Request data bytes
:
none
Response data bytes
:
2+12 = 14
[Index Format Description]
Byte 0
:
uint8 Response code 1
Byte 1
:
uint8 Response code 2
Byte 2
:
uint8 254
Byte 3
:
uint8 Manufacturer ID
Byte 4
:
uint8 Manufacturer’s device ID
Byte 5
:
uint8 Number of preambles needed in the request
Byte 6
:
uint8 Command set revision number
Byte 7
:
uint8 Transmitter specific revision code
Byte 8
:
uint8 Software revision
Byte 9
:
uint8 Hardware revision
Byte 10
:
uint8 Flags
Byte 11~13
:
uint24 Device ID number (MSB first)
Command 1: Read Primary Variable
Request data bytes
:
none
Response data bytes
:
2+5 = 7
[Index Format Description]
Byte 0
:
uint8 Response code 1
Byte 1
:
uint8 Response code 2
Byte 2
:
uint8 Unit code
Byte 3~6
:
float Primary Variable
Command 2: Read P.V. Current and Percentage of Range
Request data bytes
:
none
Response data bytes
:
2+8 = 10
[Index Format Description]
Byte 0
:
uint8 Response code 1
Byte 1
:
uint8 Response code 2
Byte 2~5
:
float Primary Variable Current
Byte 6~9
:
float Primary Variable Percentage of Range
Command 3: Read Dynamic Variables and P.V. Current
Request data bytes
:
none
Содержание HRT-710
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