Gill Instruments Ltd
Intrinsically Safe WindObserver Anemometer
Page 37
Issue 10
Doc. No. 1360-PS-0001
May 2015
8.2
Digital Format Notes
ASCII Polled Modes (Mode 3 UV, 4 Polar, 13 Tunnel and 14 RWA).
When in the Polled mode, an output is only generated when the host system sends a Poll
signal to the WindObserver consisting of the WindObserver Unit Identifier – that is, the
relevant letter A – Z.
The output formats are otherwise as described above.
The commands available in this mode are:
Description
Command
WindObserver response
WindObserver Unit Identifier
A ….. Z
Wind speed output generated
Enable Polled mode
?
(None)
Disable Polled mode
!
(None)
Request WindObserver Unit
Identifier
*&
A ….. Z (as configured)
Enter Configuration mode
*<N>
CONFIGURATION MODE
It is suggested that in polled mode the following sequence is used for every poll for
information.
?
Ensures that the Sensor is enabled to cover the event that a power down has
occurred.
A-Z
Appropriate unit designator sent to retrieve a line of data.
!
Sent to disable poll mode and reduce possibility of erroneous poll generation.
When in polled mode the system will respond to the data command within 30mS with the
last valid data sample as calculated by the Output rate (P Mode Setting).
If the unit is powered down after use or upon switch on then allow 3 seconds from switch
on before sending poll commands.
