Vaisala WINDCAP WMT700 Series - Analog Output; Analog Output Types; Figure 18 Timing for RS-232, RS-485, and RS-422 Interfaces

• Interfaces RS-232, RS-485, RS-422: The figure below shows timing when WMT700 is
polled in the measurement mode.
Figure 18 Timing for RS-232, RS-485, and RS-422 Interfaces
The response delay t2 is
user-configurable. In the configuration mode, some commands
have a longer response delay.
• SDI-12 interface: The timing is compliant with the SDI-12 standard. For the complete
SDI-12 standard text, see www.sdi-12.org.
3.8 Analog Output
Analog outputs are either enabled or disabled, and the output settings are preconfigured at
the factory according to your order. In analog output operation WMT700 takes
measurements according to the
configured averaging time and synthesizes the analog
outputs of wind speed and wind direction with an update interval of 0.25 seconds.
You can use configuration parameters to change the analog output type, WMT700 scaling
or save power by disabling the analog output functionality.
WMT700 provides the following analog outputs:
• Aout1 for wind speed data
• Aout2 for wind direction data
To emulate the WS425 analog output, choose voltage output, frequency output, and
potentiometer.
More Information
‣
Configuration Parameter Descriptions (page 187)
‣
Operating WMT700 in WS425 Analog Output Mode (page 128)
3.8.1
Analog Output Types
Analog output for Wind Speed (Aout1) can be configured as:
• Voltage output
• Current output
Chapter 3 – Functional Description
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