Fluid Components Intl ST51A, Installation, Operation & Maintenance Instruction Manual

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ST51A/ST75A/ST75AV Mass Flow Meters OPERATION
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Command 3: Read Dynamic Variable (Flow) and Loop Current
Byte Format Description
Request Data Bytes None
Response Data Bytes 0–3 Float PV Loop Current: 4-20 mA
4 Enum PV HART Unit Code, Flow
5–8 Float PV Flow Value
Response Codes: See Table 16 , page 53 , for response code list.
Command 6: Write Polling Address
Byte Format Description
Request Data Bytes 0 Unsigned-8 Polling Address of Device
1 Enum Loop Current Mode
Response Data Bytes 0 Unsigned-8 Polling Address of Device
1 Enum Loop Current Mode
Response Codes: See Table 16 , page 53 , for response code list.
Command 7: Read Loop Configuration
Byte Format Description
Request Data Bytes None
Response Data Bytes 0 Unsigned-8 Polling Address of Device
1 Enum Loop Current Mode
Response Codes: See Table 16 , page 53 , for response code list.
Command 8: Read Dynamic Variable Classifications
Byte Format Description
Request Data Bytes None
Response Data Bytes 0 Enum Primary Variable Classification
1 Enum Secondary Variable Classification
2 Enum Tertiary Variable Classification
3 Enum Quaternary Variable Classification
Response Codes: See Table 16 , page 53 , for response code list.