FCI MT100 - HART Command List Reference; Table 7 - HART Universal Commands

MT100 Multipoint Flow Meter OPERATION
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 on page 69. The MT100 response codes listed in the following command summaries are a subset of the
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.
Table 7 – HART Universal Commands
Command 0: Read Unique Identifier
Byte
Format
Description
Request Data Bytes
None
Response Data Bytes
0
Unsigned-8
254
1–2
Enum
Expanded Device Type
3
Unsigned-8
Minimum number of preambles from master to slave
4
Unsigned-8
HART Protocol Revision Number: 7
5
Unsigned-8
Device Revision Number: 1
6
Unsigned-8
Software Revision Number: 1
7
Unsigned-5
(Most Significant 5 Bits) Hardware Revision Level: 1
7
Enum
Physical Signaling Code: 00 = Bell 202 Current (4-20 mA)
8
Bits
Flags: (Unused)
9–11
Unsigned-24
Device ID
12
Unsigned-8
Minimum number of preambles from the slave to master
13
Unsigned-8
Maximum Number of Device Variables
14–15
Unsigned-16
Configuration Change Counter
16
Bits
Extended Field Device Status
17–18
Enum
Manufacturer ID Code: 166
DEC
/00A6
HEX
(FCI)
19–20
Enum
Private Label Distributor Code
21
Enum
Device Profile = 1 “HART Process Automation Device”
Code
Class
Description
Response Codes
0
Success
No Command-Specific Errors
1–127
Undefined
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