Allen-Bradley 1794-IE8H Manual de usuario Pagina 105

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Publication 1794-UM063A-EN-P - March 2006
Additional HART Protocol Information C-7
Universal Commands
Table C.5 Universal Commands
Command Data in Command Data in Reply
# Function Byte Data Type Byte Data Type
0 Read unique
identifier
None 0 254 (expansion)
1 Manufacturer
identification code
2 Manufacturer device
type code
(1)
3 Number of preambles
required
4 Universal command
revision
5 Device-specific
command revision
6 Software revision
7 Hardware revision
8 Device function
flags
(2)
(H)
9…11 Device ID number (B)
1 Read primary
variable
0 PV units code
1…4 Primary variable (F)
2 Read current and
percent of range
None 0…3 Current (mA) (F)
4…7 Primary variable
3 Read current and
four (predefined)
dynamic variables
None 0…3 Current (mA)
4 PV units code
5…8 Primary variable
9 SV units code
10…13
Secondary variable
(3)
14 TV units code
15…18 Third variable
19 FV units code
20…23 Fourth variable
6 Write polling
address
0 Polling address As in command
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