Fluid Components Intl ST51A, Инструкция по установке, эксплуатации и техническому обслуживанию

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ST51A/ST75A/ST75AV Mass Flow Meters OPERATION
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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.