Version information - AQT530

AQT530 Configuration Guide

Document code
English (United States)
Document type
User guide

This document provides instructions for configuring Vaisala Air Quality Transmitter AQT530.

Table 1. Document versions (English)
Document code Date Description
M212572EN-D December 2021

For device SW version 3.3:

  • Modbus version 1.3
  • CLI version 1.3

Changes to Modbus:

  • Changed the representation of the hexadecimal numbers from specific format 0xFFFF to generic format FFFFh
  • Added time units to calibration registers 0013h - 0015h
  • Added time units to system time registers 0057h - 005Ch
  • Added new LPC update interval register 007Fh
  • Added unit resolution (%, per cent) for register values 0086h - 008Bh
  • Added unit resolution (‰, per mille) for register values 0092h, 0093h and 0096h
  • Added new 32-bit device uptime register 0098h + 0099h
M212572EN-C September 2021
  • Modbus register address type updated for 0x0066 - 0x006B
  • Default parity for rs485_parity updated
M212572EN-B April 2021

For device SW version 3.1:

  • Modbus version 1.2
  • CLI version 1.2

Main changes:

  • Added support for PM1 observations (CLI, Modbus, ASCII CSV)
  • Added support for measurement values without linear correction (CLI and Modbus)
  • Added humidity invalidation flags for each PM value (Modbus)
  • Added device status monitoring (CLI and Modbus)
  • Updated default Modbus serial port settings
  • Updated and added some examples

Changes to CLI:

  • Added commands status and meas --nolc
  • Added PM1 to lpc --meas output
  • Added parameters pm1_zero and pm1_span

Changes to Modbus:

  • Added device status registers 0x004B - 0x004C
  • Added measurement data registers 0x006C - 0x0075
  • Added humidity invalidation flag registers 0x007C - 0x007E for PM1, PM2.5, and PM10
  • Updated LPC humidity invalidation flag register 0x007B
  • Added span and zero registers 0x0096 - 0x0097 for PM1