Connecting to AQT530 over RS-232 - AQT530

AQT530 Configuration Guide

Document code
M212572EN
Revision
D
Language
English (United States)
Product
AQT530
Document type
User guide
  • Computer
  • Service cable kit
  • Slothead screwdriver
  • Terminal block
  • Terminal program with a command line interface (CLI), such as PuTTY or TeraTerm.
This instruction and examples use and refer to PuTTY. Another program with a command line interface can also be used, but the user interface looks different.

Once you have installed and set up AQT530 as instructed in Vaisala Air Quality Transmitter AQT530 Setup Guide, you may sometimes need to connect to AQT530 locally, for example, to change the settings.

To connect to AQT530, create a local maintenance connection over the serial RS-232 interface.

  1. Connect your computer to AQT530 with the service cable kit.

    Connect the open-ended cables of the power source to the adapter and attach the adapter to the DC power connector (10 ... 25 V DC).

    Alternatively, connect your own power source directly to the DC power connector.

    Wire color Power
    Red +
    Black
  2. On your computer, select Start > PuTTY.
  3. On your computer, select Start > Control Panel > Device Manager > Ports (COM & LPT).

    In Device Manager, check to which port AQT530 is connected with name ATEN USB to Serial Bridge. For example: ATEN USB to Serial Bridge (COM1).

  4. In PuTTY, select Serial or Serial & USB.
    The screen may look different, depending on the computer and Windows operating system version.
  5. In PuTTY Configuration, select the COM port where you connected ATEN USB to Serial Bridge.
    Use the following COM port settings.
    Parameter Value
    Speed (baud) 115200
    Data bits 8
    Stop bits 1
    Parity None
    Flow control None

    These settings are applied on your computer so that it can connect to AQT530.

  6. Select Open.

    Connection to AQT530 is now open and you can proceed to read and set parameters.

    To start, press ENTER or type command motd.