Section 7
Parameter Settings
38
FT742-SM (RS422 & RS485) Sensors
– User Manual
7.1.2
Query Commands
Figure 27 lists the commands that may be sent to the sensor from the host computer that are used to QUERY
the wind sensor
’s latest readings or configuration.
Command
Mnemonic
Sensor Data Returned
Section
Anemometer Mount
AM
Normal
Inverted
Acoustic Temperature
AT
Temperature
Temperature Units (°C, °F, K)
Filter time period
Serial interface baud rate
BR
1200, 2400, 4800, 9600, 19200, 38400
Compass Settings
CF
Enabled or Disabled
Compass status
000.0° to 359.9°
Continuous update
CU
Enabled or Disabled
Update interval (0.1 - 6000 seconds)
(operating CU mode using RS485 requires
V7.4 or above)
7.4.7
Wind velocity data format
DF
Polar or NMEA
Runtime Counter
DG
Number of hours of runtime
Command delay interval
DL
00 to 20
Error report
ER
Factory Report
Wind velocity filter
FL
Enabled or Disabled
Speed filter length, 1-64
Direction filter length, 1-64
Selective Filter
FL
Enabled or Disabled
Validity Period
Heater settings
HT
Setpoint Temperature, 0°C to 55°C.
Percentage of heater current, 0% to 100%
Internal sensor temperature, 00°C to
±99°C,
Heater Delay Time, 4s to 999s
Listener and talker identifiers
ID
Listener ID = xx
Talker ID = xx
Min/Max wind speed
MM
Min and Max Speeds Recorded
Overspeed Warning Status
OS
Enabled or Disabled
Serial Number
SN
Serial Number
Software Version
SV
Software Version
User Calibration Table
UC
Enabled or Disabled
Wind speed table record
Table label
7.4.23
7.4.24
7.4.25
7.4.26
7.4.27
Saved User Parameters
US
Matches Saved to Current User Parameters
Wind velocity reading
WV
Wind Speed, Direction and Sensor Status
Figure 27: Query Commands