WindSonic Doc No 1405 PS 0019 Issue 25 February 2017
20
7.5 Connecting WindSonic Option 2 or 3 set for default
RS422 to a PC using an RS232 Safe Mode Connection.
WindSonic
9 Way circular connector
PC
Typical 9 Way ‘D’ Connector
Signal names
Pin nos. Cable – 3 twisted
pairs
Signal names Pin no's
TXD
RXD
5
7
RXD
TXD
2
3
Signal
Ground
1
Signal Ground 5
Do NOT
connect
at this end
N/A Screen and drain
wires
Chassis
ground
N/A
V supply +
V supply -
2
3
+
–
DC Power supply
(See Para 7.3.2)
1. Connect the Option 2 or 3 WindSonic as per the above connection diagram.
2. With WindSonic power off, set up a HyperTerminal connection as per Page 46 but
with the Baud rate set to 19200 (this can be at variance with the original
WindSonic Baud rate setting).
3. Hold down the * character (shift 8) and then apply power to the WindSonic. After
approximately 3 seconds the unit will respond with Safe Mode.
4. To change output communication from RS422 to RS232 then remove any * characters
on screen.
5. Type E3 and press Enter (changes E2 setting to E3).
6. E3 will be seen twice on screen to confirm the setting change to RS232 has occurred.
7. Change any other configuration settings as required.
8. Type Q and press Enter to go back into measurement mode (garbled data may appear
on screen if the original WindSonic Baud rate setting is not 19200bauds).
9. If required close the 19200-baud HyperTerminal connection and re-open at the
WindSonic Baud rate. If a continuous data mode has been previously chosen then data will
scroll on screen.
(Note that supply voltage connections are reversed compared to the Option 1 RS232
unit. Damage will not occur from a reverse voltage connection).
7.6 Changing an Option 2 or 3 Sensor set for RS232 back
to RS422.
Connect the Option 2 or 3 WindSonic as per Para 7.5.
Repeat instructions shown in Para 7.5 except that in Safe Mode set the E Command to E2
etc.
WindSonic Doc No 1405 PS 0019 Issue 25 February 2017
21
7.7 Connecting to a Gill WindDisplay
Meteorological Display Marine Display
The WindSonic is designed to interface with the Gill WindDisplay unit to provide a
complete wind speed and direction system.
To interface to a non NMEA WindDisplay the WindSonic is set by default for Polar
(M2) and 9600 (B3) configuration settings.
When coupled to a WindDisplay, the WindSonic can be used as supplied, however if a
fault occurs the WindDisplay may lock into the last valid reading. Re-configuring the
WindSonic to Fixed Field output (O2) will ensure that any fault is flagged on the
WindDisplay.
After coupling to a WindDisplay, the Wind Speed units and the Averaging period can
be selected using the WindDisplay controls. See the WindDisplay User Manual.
Note that although the WindDisplay can display wind speed in various units, these are
calculated within the WindDisplay. The data coming to the WindDisplay must be in
metres/sec (the factory default output setting).
Notes
1. WindSonic Option 2 or 3 must be used set for RS422 output (E2 Mode).
2. Use the WindSonic in the factory default mode for the Meteorological Wind
Display – i.e. do not reconfigure.
3. If used with a Marine NMEA 9600 Baud or4800 Baud WindDisplay set the
Wind Sonic for NMEA (e.g. M5) and 9600 Baud (B3) or4800 Baud (B2).
4. The WindDisplay can provide power to the WindSonic.
WindSonic Connector Cable WindDisplay
Signal name Pin no. 2 twisted pairs Signal name Terminal no.
TXD +
TXD –
4
5
TXD +
TXD –
8
7
No connection N/A Screen and drain
wires
Ground (Earth)
V supply +
V supply -
2
3
+
O
2
1
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