file: asigilwnd24v5_cmd.html
12 Mar 2013

ASIMET SONIC WIND MODULE VERSION 5.xx with SDHC COMMAND SET Preliminary

See ASIMET MODULE OPERATIONS document for instructions on how to hook up the comms link to your PC and RS-485 adapter.
Refer to Latest Version Information for reference info on latest firmware version numbers.

SDHC NOTE 1 - Firmware Ver 5.xx has been tested using SanDisk SDHC cards of 2 GB, 4 GB, and 8 GB on WHOI ASIPIC24 Rev - CPU boards.

SDHC NOTE 2 - SDHC cards MUST be initialized using the I command choice in the SDOK command menu. SDHC cards may be read on a PC and will contain 3 files: an ASIWND24.ID file, an ASIWND24.INF file, and an ASIWND24.DAT file. Refer to SDHC Storage Format for details.

Note 1: this module currently uses the GILWND45 type of sensor front-end. Reference the GILWND45 Gill Sonic Wind Interface Commands document.

        Note that the Gill wind sensor documentation refers to the Gill U axis as "north"
        and the Gill V axis as "east".   In addition, wind blowing TO the east on the
        Gill V (east) axis is negative.

        UOP / Oceanographic convention is as follows:

                Wind TO the EAST is POSITIVE on the U axis
                Wind TO the NORTH is POSITIVE on the V axis

        Thus, the "raw" Gill values are converted before further use in the
        calculations:
                sonic_U_east = -(gill_V);
                sonic_V_north = gill_U;

	The R command below displays the actual U and V values received from the Gill sensor.
	The T command below displays the sonic_U_east and sonic_V_north values corresponding
	to  UOP / Oceanographic convention as described here.

Note 2: This module is compatible with the ASIMET RM Young Wind Module; the 'C' command output is identical in format. The RM Young LastVane parameter is replace by the equivalent the Gill LastXYDir parameter.

Note 3: SDHC Storage - In addition to the one-minute values displayed by the C command below, the Gill sensor values for Speed of Sound and Temperature are logged - see Record Format.   Speed of Sound and Temperature may be viewed via the R command below.

Note: commands sent are indicated in BOLD, responses in normal text. <crlf> represents ASCII carriage return and line feed; <crlfetx> represents ASCII carriage return, line feed, ETX (03h).

Command Description



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