iQntrol DOS-MODBUS dosing system

Use cases

• Monitor live pH, Redox, and temperature readings on a cloud dashboard for remote pool maintenance.
• Create alerts when pH or Redox values drift outside configured alarm limits to respond before water quality degrades.
• Adjust pH and mV setpoints remotely from the ModbusCloud platform without a site visit.
• Track chemical canister levels over time and schedule refills based on consumption trends.
• Set up notifications for flow loss, leak detection, or fuse faults to catch equipment issues early.
• Log historical water quality data for compliance documentation or seasonal analysis.

Installation

1. 1Connect the ModbusCloud gateway (MCG or MLP series) to the same local network as the iQntrol DOS-MODBUS, ensuring both devices can reach each other over Modbus TCP on port 502.
2. 2Verify the IP address of the iQntrol DOS-MODBUS unit and confirm it is reachable from the gateway using a network scan or ping test.
3. 3Set the Modbus TCP unit ID on the dosing system if multiple Modbus devices share the same network segment, and note the configured ID for the template setup.
4. 4Import the Peraqua iQntrol DOS-MODBUS template in the ModbusCloud portal and assign the correct IP address and unit ID to the device.
5. 5Confirm that live values for pH, Redox, and temperature appear on the dashboard, and verify alarm flag registers toggle correctly by simulating a flow interruption if possible.

Things to watch for

01

Why do some register values appear incorrect or swapped?

The device uses float32 registers for measurements and setpoints, and uint16 for status flags. Some register addresses overlap between function blocks. Ensure you are using the correct template mapping and that your gateway is reading the right function block for each register.

02

What byte order should I use for float32 registers?

Peraqua devices typically use big-endian (AB CD) byte order for float32 values. If readings look unrealistic, try toggling the word order setting in the ModbusCloud device configuration.

03

The gateway cannot connect to the dosing system over Modbus TCP. What should I check?

Confirm the iQntrol DOS-MODBUS and the gateway are on the same subnet. Verify that TCP port 502 is not blocked by a firewall or router. Check that no other client is holding an exclusive Modbus TCP connection to the device.

04

Is the Aquastar Air supported by this same template?

Yes. The Aquastar Air is listed as a compatible model and shares the same Modbus register map as the iQntrol DOS-MODBUS.

Registers (43)

43 read / 12 write

More Peraqua templates

iQntrol salt electrolysis SALT-COMPLETE

Peraqua

Modbus RTU

Monitors pool water chemistry and salt electrolysis parameters via RS485

0 registers28

iQntrol SALT-MODBUS salt electrolysis | TOUCH EVO PLUS

Peraqua

Modbus RTU

Controls salt electrolysis pool water treatment with real-time pH, ORP, and PPM monitoring.

35 registers44

iQntrol Dosieranlage DOS-COMPLETE Redox-CLF

Peraqua

Modbus RTU

Monitors pool water treatment parameters via RS485 for dosing systems

0 registers36

Ocean Poolpump Inver iQ 300

Peraqua

Modbus RTU

Controls a variable-speed pool pump via Modbus RTU for energy-efficient filtration

23 registers21

iQntrol dosing system DOS-NET

Peraqua

Modbus RTU

Monitors pool water treatment parameters via RS485 interface

0 registers20

More TCP templates

Algodue Energy meter UEM80-2D E

Algodue Elettronica S.r.l.

Modbus TCP

Measures single-phase energy consumption and production via Modbus TCP.

12 registers46

Sigenergy SigenStore EC (grid)

Sigenergy

Modbus TCP

5 registers1

Fronius GEN24

Fronius

Modbus TCP

Monitors and controls Fronius GEN24 inverters and PV batteries via SunSpec Modbus TCP

0 registers762

HUAWEI SUN2000 Inverter & LUNA2000 battery

Huawei

Modbus TCP

Monitors HUAWEI SUN2000 inverter, LUNA2000 battery, and Smart Power Sensor via Modbus TCP.

4 registers1248

NIBE Nibe S-Series (SG Ready)

NIBE

Modbus TCP

5 registers1

Fronius - Modbus TCP

Fronius

Modbus TCP

Monitors Fronius Symo and Primo inverters via Modbus TCP

15 registers597