Installation, Operation and Maintenance Manual
MDE 254 Rev. 1 March 2021
HART Command Set 13
Section 8: HART Command Set
No. Command Description
0 Read Unique Identifier
1 Read Primary Variable
2 Read Loop Current and Percent of Range
3 Read Dynamic Variables and Loop Current
6 Write Polling Address
7 Read Loop Configuration
8 Read Dynamic Variable Classifications
9 Read Device Variables with Status
11 Read Unique Identifier Associated with Tag
12 Read Message
13 Read Tag, Descriptor, Date
14 Read Primary Variable Transducer Information
15 Read Device Information
16 Read Final Assembly Number
17 Write Message
18 Write Tag, Descriptor, Date
19 Write Final Assembly Number
20 Read Long Tag
21 Read Unique Identifier Associated with long Tag
22 Write Long Tag
38 Reset Configuration Changed Flag
48 Read Additional Device Status
No. Command Description
0
1
2
3
6
7
8
9
11
12
13
14
15
16
17
18
19
20
21
22
38
48
Read Unique Identifier
Read Primary Variable
Read Loop Current and Percent of Range
Read Dynamic Variables and Loop Current
Write Polling Address
Read Loop Configuration
Read Dynamic Variable Classifications
Read Device Variables with Status
Read Unique Identifier Associated with Tag
Read Message
Read Tag, Descriptor, Date
Read Primary Variable Transducer Information
Read Device Information
Read Final Assembly Number
Write Message
Write Tag, Descriptor, Date
Write Final Assembly Number
Read Long Tag
Read Unique Identifier Associated with long Tag
Write Long Tag
Reset Configuration Changed Flag
Read Additional Device Status
Byte Format Description
None
Section 8: HART Command Set
8.1 Universal Commands
Table 6.
8.1.1 Command #0: Read Unique Identifier
This command returns identity information about the field device including: Device Type, Revision
Levels, and Device ID.
Table 7. Request Data Bytes