Section 6
Parameter Settings
39
FT702LT Flat Front Wind Sensor Manual
6.4.6
DL: Set or Query the Command Delay Interval
Command
Parameter
DL
Command
Syntax
SET Sensor:
$<listenerID>,DL<delay>*<checksum><cr><lf>
$aa,DLxx*hh<cr><lf>
QUERY Sensor:
$<listenerID>,DL?*<checksum><cr><lf>
$aa,DL?*hh<cr><lf>
FT702LT output:
$<talkerID>,DL=<delay>*<checksum><cr><lf>
$aa,DL=xx*hh<cr><lf>
Parameters
<delay>
00 to 20
(delay interval, in 50ms increments) (Factory Default Setting = 01)
Examples
Example 1
Set the command delay interval to 250ms and verify the new setting.
Message
Comment
$01,DL05*//<cr><lf>
Set delay to 250ms
$01,DL?*//<cr><lf>
Query delay setting
$WI,DL=05*02<cr><lf>
FT702LT response
Description
Use the DL command to set the delay interval from when the FT702LT receives a command
to when the command is executed. The DL command is primarily intended for use where a
time delay may be required to allow the RS485 interface to switch from transmit to receive
mode.
For example, if the delay interval is set to 250ms then the FT702LT will commence
outputting the wind velocity data between 250-300ms after receiving a WV query command.
If any further commands are sent to the FT702LT before the delay interval has elapsed they
will be discarded.
