Vaisala WXT520 Manuel d'utilisateur télécharger pdf (Page 9)

CONFIGURING VAISALA WITH SICALA

The 7470 allows sending commands to

the RS-232/485 bus from the POL

(programming) port. Nokeval has planned

to make a PC software later that would

configure both the 7470 and Vaisala unit.

While this software is not available, the

commands can be sent using a software

called Sicala. This is not convenient but

may still be useful in some situations.

Sicala is a testing software for devices

using Nokeval SCL protocol. The 7470

uses this protocol on its POL port.

Set-up

Download Sicala from Nokeval website

and install it, or install it from Nokeval

Software CD.

Connect the programming cable between

your PC and 7470.

Close MekuWin totally before launching

Sicala, to free the serial port.

Wire the 7470 and Vaisala weather

station together, if they are not already.

Look at chapter Wiring.

In Sicala, select the COM port of the

programming cable. Select 9600 baud,

8N1 bits, SCL with BCC protocol, address

0.

Write command TYPE ? And press enter.

If all is OK, you should see a green

response “7470 V3.0”.

Sending commands for Vaisala

The command C is used to request the

7470 to send a command to Vaisala. In

the Command box, write C, one space,

and a Vaisala command, and press enter

(or click the Send button). An example:

C 0R1

This sends command 0R1 (request wind

data) to RS-232/485 port.

Getting responses

To hear what Vaisala has to say, use

command G (get). In Sicala command

box, write G only, and press enter. You

should see a Vaisala message in the

Response box. Since the messages are

buffered in the 7470, press enter several

times to read out all messages, until an

empty response is returned (green <> in

the Response box).

The message buffer in 7470 is limited in

size, about 400 bytes, so the oldest

messages will be discarded if too much

data is input before reading it out.

Configuring

Proceed as in chapter Configuring Vaisala

with a terminal software, 7, but send the

commands with C command and read the

responses with G command.

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