Vaisala DPT146 Guide de l'utilisateur télécharger pdf (Page 36)

User's Guide _______________________________________________________________________

34 ___________________________________________________________________ M211372EN-D

Terminal Application Settings

The serial interface settings of the DPT146 RS-485 line are presented in

Table 5 below.

Table 5 Default Serial Interface Settings

Property

Description / Value

Baud rate

19200

Parity

None

Data bits

Stop bits

Flow control

None

The steps below describe how to connect to the DPT146 using the

PuTTY terminal application for Windows (available for download at

www.vaisala.com) and a USB serial interface cable:

1. Connect the USB serial interface cable between your PC and the

RS-485 port of the DPT146 (port II).

2. Start the PuTTY application.

3. Select the Serial settings category, and check that the correct COM

port is selected in the Serial line to connect to field.

Note: You can check which port the USB cable is using with the

Vaisala USB Instrument Finder program that has been installed

in the Windows Start menu.

4. Check that the other serial settings are correct for your connection,

and change if necessary. Flow control should be set to None unless

you have a reason to change it.

5. Click the Open button to open the connection window and start

using the serial line.

Note: If PuTTY is unable to open the serial port you selected, it

will show you an error message instead. If this happens, restart

PuTTY and check the settings.

6. You may need to adjust the Local echo setting in the Terminal

category to see what you are typing on the serial line. To access the

configuration screen while a session is running, click the right

mouse button over the session window, and select Change

Settings... from the pop-up menu.

If the DPT146 is in Modbus mode, to access the serial port command

interface, follow the procedure in Accessing Serial Port Command

Interface from Modbus Mode on page 51.

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Vaisala DPT146 Guide de l'utilisateur Page 36

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