Vaisala GMP343 User Manual

Page 31

Chapter 4 ________________________________________________________________ Operation

VAISALA_______________________________________________________________________ 29

If your device is configured to RS-485 communication mode, switch
the device into the service mode by sending a string containing at least
6 capital 'Z' while powering up. The most convenient way using PC is:
Press and keep pressing SHIFT + 'z' while powering up GMP343.
Keep pressing SHIFT + 'z' until GMP343 starts up in the service
mode. The device should prompt as follows:

COMM PARAMETERS IN EEPROM:

SMODE : STOP

BAUD RATE: 19200

DATA BITS: 8

PARITY: NONE

STOP BITS: 1

ADDR: 0

HARDWARE CONFIGURATION:

COMM CHANNEL: RS485

ANALOG OUTPUT: VOLTAGE

GMP343 - VERSION STD 2.0

>ZZZZZZZZZZZ

Key in the commands with the keyboard of your computer and press
enter. In this guide <cr> stands for pressing ENTER .

NOTE

Responses from the GMP343 are terminated by the following string:

[cr][lf]>

That is a carriage return character, a line feed, and a right angle bracket.