Flowserve MX HART Field Unit - Manual (Page 22)

MX/QX HART Field Unit FCD LMENIM2340-00 – 1/14
22
Figure 3.2 – Device Variable Units
3.5 Supported HART Commands
The following Universal and Common HART commands are supported by the Limitorque MX/QX HART device. See
Appendix B for more information on HART data formats such as: Packed, Latin-1, Date and Time. See Appendix C for
more information on “Enum” or “Bits” formats. See Appendix E for more information on valid Response Codes for each
command.
3.5.1 Universal Commands
Table 3.7 – HART Universal Commands
Command Request Data Bytes Response Data Bytes
No. Description Byte Format Description Byte Format Description
0 Read Unique
Identifier
0
1-2
3
4
5
6
7
7
8
9-11
12
13
14-15
16
17-18
19-20
21
Unsigned-8
Enum
Unsigned-8
Unsigned-8
Unsigned-8
Unsigned-8
Unsigned-5
Enum
Bits
Unsigned-24
Unsigned-8
Unsigned-8
Unsigned-16
Bits
Enum
Enum
Enum
254”
Expanded Device Type = 0x3008
Min. number of request preambles = 5
HART Protocol Major Rev. = 7
Device Rev. Level
Software Rev. Level
(5 MSB) Hardware Rev. Level
(3 LSB) Physical Signaling Code=0
Device Flag Assignment = 1
Device ID (unique for given device type)
Min. number of response preambles=5
Max. number of device variables = 5
Configuration Change Counter
Extended Field Device Status: 0=OK,
1=Maintenance req’d, 2=Device Alert
Manufacturer Identification Code = 0x0030
Private Label Distributor Code = 0x0030
Device Profile = 1
1 Read Primary
Variable
0
1-4
Enum
Float
Primary Variable Units = 57 (%)
Primary Variable
2 Read Loop
Current And
Percent Of
Range
0-3
4-7
Float
Float
Primary Variable Loop Current (mA)
Primary Variable % Of Range
3 Read Dynamic
Variables And
Loop Current
0-3
4
5-8
9
10-13
14
15-18
19
20-23
Float
Enum
Float
Enum
Float
Enum
Float
Enum
Float
Primary Variable Loop Current (mA)
Primary Variable Unit Code
Primary Variable
Secondary Variable Unit Code
Secondary Variable
Tertiary Variable Units Code
Tertiary Variable
Quaternary Variable Unit Code
Quaternary Variable
6 Write Polling
Address
0
1
Unsigned-8
Enum
Polling Address of Device
Loop Current Mode
0
1
Unsigned-8
Enum
Polling Address of Device (0-63)
Loop Current Mode
7 Read Loop
Configuration
0
1
Unsigned-8
Enum
Polling Address of Device (0-63)
Loop Current Mode