FCI ST100A Series - Page 81

ST100A Series Flow Meter OPERATION
Fluid Components International LLC 73
Command 187: Read KFactor3
Byte
Format
Description
Request Data Bytes
0–3
Float
Read KFactor3
Response Data Bytes
0–3
Float
Read KFactor3
Response Codes
See Table 17, page 74, for response code list.
Command 188: Read KFactor4
Byte
Format
Description
Request Data Bytes
0–3
Float
Read KFactor4
Response Data Bytes
0–3
Float
Read KFactor4
Response Codes
See Table 17, page 74, for response code list.
Command 191: Totalizer Reset
Byte
Format
Description
Request Data Bytes
0
Unsigned-8
Reset Key = 0x00
Response Data Bytes
0
Unsigned-8
Reset Key = 0x00
Response Codes
See Table 17, page 74, for response code list.
Command 193: Read Process Variable and Time Stamp
Byte
Format
Description
Request Data Bytes
0–13
Float
Read PV value, status, PV units, PV classification code, date
code, and timestamp.
Response Data Bytes
0–13
Float
Read PV value, status, PV units, PV classification code, date
code, and timestamp.
Response Codes
See Table 17, page 74, for response code list.
HART Command Bit Assignments
Command Status Bytes
The HART command response data field includes a status message in the first two bytes. The first byte (0) is the Comm Error/Response code.
The second byte (1) is the Device status. Byte 0 indicates either a communication error or a command-specific response code if no
communication error exists. Note that within the first byte, bit b7 is either set or cleared to indicate that the byte indicates a comm error or a
command-specific response code, respectively. Table 16 summarizes the command status bytes. Table 17 summarizes the command-specific
response codes.