Vaisala PTU200 Series Guia do Utilizador descarregar pdf (Página 10)

USER'S GUIDE_______________________________________________________________________

6 ____________________________________________________________________ M210195EN-A

ABLE 3-1 Pin assignment for RS 232C/TTL serial output

PIN SIGNAL

1 TX with diode

2 TX/TXD/TXD inverted

3 RX/RXD/RXD inverted

4 external power on/off control

5 ground for the RS 232C

7 ground for supply voltage

9 supply voltage (10...30 VDC)

TABLE 3-2 Pin assignment for optional RS 232C/485/422

PIN SIGNAL

1 TX with diode

2 TX/TXD/TXD inverted

3 RX/RXD/RXD inverted

4 external power on/off control

5 ground for the RS 232C

6 RS 485/422 LO

7 ground for supply voltage and TTL level serial interface

8 RS 485/422 HI

9 supply voltage (10...30 VDC)

The factory settings of the PTU200 series transmitters are the

following:

TABLE 3-3 Serial interface factory settings

Baud rate 9600

Parity even

Data bits 7

Stop bits 1

Duplex full duplex

After having made the electrical connections, switch the power on,

and the transmitter responds indicating its type and the software

version.

PTU200 / 1.01

The transmitter is now ready to respond to any command available.

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Vaisala PTU200 Series Guia do Utilizador Página 10