Vaisala DMP248 Service Manual download pdf (Page 127)

APPENDIX 4 ________________________________________________________________________

VAISALA ________________________________________________________________________ 121

•

Set the serial port of the terminal to 4800 baud, even

parity, seven data bits and one stop bit, full duplex (4800 E 7 1 FDX).

• The serial settings of the transmitter must also be 4800 E 7

1 FDX and the transmitter must be in STOP mode. If these factory

settings have been changed, they must be changed back. Connect the

RS 232C port of the terminal to connector X17 on the top of the main

board and switch the power on.

RX GND TX

X17

Single loop wiring

• Set the address of the transmitter; it can be any number

between 1 and 99. In this example the address is 22:

>addr 22

Address : 22

•

Set the serial bus settings according to your network

specifications. This setting will become valid after next RESET or

power off:

>seri 2400 e 7 1 h

2400 E 7 1 HDX

•

Set the transmitter in POLL mode:

>smode poll

Serial mode : POLL

NOTE

The SMODE command must be given last.

NOTE

The transmitter outputs no prompt (>) after the SMODE POLL

command and it only reacts to commands which include its address.

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Vaisala DMP248 Service Manual Page 127