FCI ST100A Series, Инструкция по установке, эксплуатации и обслуживанию

Страница: 68 / 170

OPERATION ST100A Series Flow Meter
60 Fluid Components International LLC
Command 2: Read Primary Variable Loop Current and Percent of Range
Byte Format Description
Request Data Bytes None
Response Data Bytes 0–3 Float Primary Variable Loop Current (mA)
4–7 Float Primary Variable Percent of Range (%)
Response Codes See Table 17 , page 74 , for response code list.
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 17 , page 74 , 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 17 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 17 , page 74 , for response code list.
Command 8: Read Dynamic Variable Classifications
Byte Format Description
Request Data Bytes None
Response Data Bytes 0 Unsigned-8 Primary Variable Classification
1-3 Unsigned-8 SV, TV and QV not used (Classification 0)
Response Codes See Table 17 , page 74 , for response code list.