Fluid Components Intl ST51A - Page 51

ST51A/ST75A/ST75AV Mass Flow Meters OPERATION
Fluid Components International LLC 43
Command 11: Read Unique Identifier Associated with Tag
Byte
Format
Description
Request Data Bytes
0–5
Packed
Tag, Packed ASCII
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
6
Unsigned-8
Software Revision Number
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: 01 = Multisensor
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”
Response Codes:
See Table 16, page 53, for response code list.
Command 12: Read Message Contained Within Device
Byte
Format
Description
Request Data Bytes
None
Response Data Bytes
0–11
Bitstring
Device ID No.
Response Codes:
See Table 16, page 53, for response code list.
Command 13: Read Tag, Descriptor, Date
Byte
Format
Description
Request Data Bytes
None
Response Data Bytes
0–5
Packed
Tag
6–17
Packed
Descriptor
18–20
Date
Date Code: Day, Month, Year
Response Codes:
See Table 16, page 53, for response code list.
Command 14: Read Primary Variable (Flow) Transducer Information
Byte
Format
Description
Request Data Bytes
None
Response Data Bytes
0–2
Unsigned-24
Transducer Serial Number
3
Enum
Transducer Limits and Minimum Span Units Code
4–7
Float
Upper Transducer Limit
8–11
Float
Lower Transducer Limit
12–15
Float
Minimum Span
Response Codes:
See Table 16, page 53, for response code list.