Vaisala WMT700 - Manual (Page 47)

Chapter 3 _______________________________________________________ Functional Description
Serial Communication and Analog Output
The following functionality is preconfigured at the factory
according to your order:
- Digital communication interface for COM2
- Digital communication profile for COM2
- Digital communication units
- Analog output signals for wind speed channel (AOUT1)
- Analog output signals for wind direction channel (AOUT2)
For descriptions of serial commands and data messages, see
section Operation on page 107.
Serial Communication
In WMT700, there are two serial communication ports:
- COM1: Service port (RS485)
- COM2: Configurable digital communication interface
Both ports support the same commands, protocols, operations,
and data messages. Any computer or data logger that has a serial
port can be used to send commands to WMT700 and to receive
measurement data.
Digital Communication Interface
COM1 is a fixed RS-485 communication interface intended to be
used as a service port.
COM2 is a flexible digital communication interface that is
preconfigured according to your order. The available options are:
- RS-232 (recommended up to 15 meter distance)
- RS-485 (recommended up to 1200 meter distance when used
in point-to-point connection)
- RS-422 (recommended up to 1200 meter distance)
- SDI-12 (recommended up to 60 meter)
Note that the recommendations depend on communication speed
and cable type. In optimized environments even longer distances
can be considered.
VAISALA ________________________________________________________________________ 45