OPERATION ST80/ST80L Flow Meter
54 Fluid Components International LLC
ST80/ST80L HART Common Practice Commands
The ST80/ST80L supports Common Practice commands 35, 40, 42, 44, 45, 46, 50 and 51. Table 12 below summarizes the instrument’s
HART Common Practice command set and the data associated with each command.
Table 12 – HART Common Practice Commands
Command 35: Write Primary Variable (PV) Range Values
PV Upper and Lower Range Values Units Code
PV Upper Range Value (Customer Max. Flow Limit)
PV Lower Range Value (Customer Min. Flow Limit)
PV Upper and Lower Range Values Units Code
See Table 16, page 62, for response code list.
Note: 1. The value returned in the response data bytes reflects the rounded or truncated value actually used by the device.
Command 40: Enter/Exit Fixed Current Mode
PV Fixed Current Level (mA units); “0” to Exit Fixed Current
See Table 16, page 62, for response code list.
Notes: 1. Specify a value (in mA) to drive Ch. 1 to a particular output value. Specify “0” to exit the fixed current mode.
Command 42: Perform Device Reset (Soft Reset of Flow Meter)
1
See Table 16, page 62, for response code list.
Note: 1. Send Command 42 (no data) to reset the instrument. No response is returned due to reboot.
Command 44: Write Primary Variable Units
See Table 16, page 62, for response code list.
Note: 1. The value returned in the response data bytes reflects the value actually used by the device.
Command 45: Trim DAC Zero – Measured Current Chan #1 (in mA)
Ext. Measured Current Ch. #1 Level (4 mA Zero_DAC)
Actual Measured Current Ch. #1 Level (4 mA Zero_DAC)
See Table 16, page 62, for response code list.
Note: 1. The value returned in the response data bytes reflects the rounded or truncated value actually used by the device.
To Next Page
Loading...
Need help?
General
