WindSonic Doc No 1405 PS 0019 Issue 28 November 2019
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9.3 Gill format – Polled (Polar or UV)
When in the Polled mode, an output is only generated when the host system sends a Poll
signal to the WindSonic consisting of the WindSonic Unit Identifier – that is, the relevant
letter A – Z.
The output formats are otherwise as described in Sections 9.1 and 9.2.
The commands available in this mode are:
WindSonic Unit Identifier
Wind speed output generated
Request WindSonic Unit Identifier
Where <N> is the unit identifier, it is recommended that ID’s A to F and KMNP are not used
as these characters can be present in the data string.
Notes: -
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 130mS 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 5 seconds from switch on
before sending poll commands.
Polled mode can only be used for point to point communications. It is not possible to
network units on a common bus.
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