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MT100 Multipoint Flow Meter
HART Command List Reference
The HART commands are divided into three classes.
●
Universal Commands
●
Common Practice Commands
●
Device Specific Commands
Barring no communication error, a field or slave device returns a response code as part of the 2-byte status response to a command. Refer
to
Command Status Bytes
response codes listed in the HART specification.
MT100 HART Universal Commands
The MT100 HART supports Universal Commands 0 through 22 and 38 and 48. Commands 4 and 5 are reserved under Universal
Command Specification Rev. 7.1 (HCF_SPEC-127, Revision 7.1) and not implemented in this specification. There is no HART command
10.
Table 7
below summarizes the instrument's HART Universal command set and the data associated with each command.
Command 0: Read Unique Identifier
Request Data Bytes
Response Data Bytes
Response Codes
Fluid Components International LLC
on page 69. The MT100 response codes listed in the following command summaries are a subset of the
Table 7 – HART Universal Commands
Byte
Format
None
0
Unsigned-8
1–2
Enum
3
Unsigned-8
4
Unsigned-8
5
Unsigned-8
6
Unsigned-8
7
Unsigned-5
7
Enum
8
Bits
9–11
Unsigned-24
12
Unsigned-8
13
Unsigned-8
14–15
Unsigned-16
16
Bits
17–18
Enum
19–20
Enum
21
Enum
Code
Class
0
Success
1–127
Description
254
Expanded Device Type
Minimum number of preambles from master to slave
HART Protocol Revision Number: 7
Device Revision Number: 1
Software Revision Number: 1
(Most Significant 5 Bits) Hardware Revision Level: 1
Physical Signaling Code: 00 = Bell 202 Current (4-20 mA)
Flags: (Unused)
Device ID
Minimum number of preambles from the slave to master
Maximum Number of Device Variables
Configuration Change Counter
Extended Field Device Status
Manufacturer ID Code: 166
DEC
Private Label Distributor Code
Device Profile = 1 "HART Process Automation Device"
Description
No Command-Specific Errors
Undefined
OPERATION
/00A6
(FCI)
HEX
47
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Troubleshooting
