March 2021
Installation, Operation and Maintenance Manual
MDE 254 Rev. 1
HART Command Set16
Section 8: HART Command Set
Code Class Description
0 Success No Command-Specific Errors
1 - 5 Undefined
6 Error Device-Specific Command Error
7 Undefined
8 Warning Update Failure
9 - 15 Undefined
16 Error Access Restricted
17 - 127 Undefined
Code Class Description
0 Success No Command-Specific Errors
1 Undefined
2 Error Invalid Poll Address Selection
3 - 4 Undefined
5 Error Too Few Data Bytes Received
6 Error Device-Specific Command Error
7 Error In Write Protect Mode
8 - 11 Undefined
12 Error Invalid Mode Selection
13 - 15 Undefined
16 Error Access Restricted
17 - 31 Undefined
32 Error Busy
33 - 127 Undefined
Table 18. Command-Specific Response Codes
Byte Format Description
0 Unsigned-8 Polling Address of Device
1 Enum Loop Current Mode (see Section 8.4, Table 128)
Byte Format Description
0 Unsigned-8 Polling Address of Device
1 Enum Loop Current Mode (see Section 8.4, Table 128)
8.1.5 Command #6: Write Polling Address
This command permits to write the Polling Address and the Loop Current mode to the field device.
Table 19. Request Data Bytes
Table 20. Response Data Bytes
Table 21. Command-Specific Response Codes