Vaisala PTU200 - Manual (Page 47)

C HAPTER 7____________________________________________ SELF - TESTING AND PROBLEM HANDLING
V AISALA _________________________________________________________________________ 43
CHAPTER 7
SELF-TESTING AND
PROBLEM HANDLING
Returning the serial communication
parameters
To restore factory software and hardware settings, set the dip switch
S1 on the CPU board as in
F IGURE 7-1 . Other switches except the SW8
must be OFF. In addition, the serial interface has to be set for basic RS
232C operation according to
F IGURE 7-1 . With these selections, one
single transmitter can be operated through the RS 232C serial
interface using factory serial bus settings as in
T ABLE 7-1 . Returning
the SW8 to OFF will restore the original, application specific software
settings.
ON
OFF
SW1
SW2
SW3
SW4
SW5
SW6
SW7
SW8
S1
TXD
RXD
X15
RX/RXD
TX
TXD
F IGURE 7-1 Factory settings for the dip switch S1 and Basic RS
232C settings
T ABLE 7-1 Serial interface factory settings
Baud rate 9600
Parity even
Data bits 7
Stop bits 1
Duplex full duplex