Idegis Domotic

Use cases

• Monitor real-time chlorine production and pH levels on a cloud dashboard for pool maintenance clients.
• Create an alert when the salt test result drops below the minimum threshold to prevent insufficient chlorine generation.
• Remotely adjust the pH setpoint and ORP setpoint without a site visit to the pool equipment room.
• Log historical ORP and pH trends to demonstrate compliance with water quality standards.
• Detect flow alarms early and notify the service team before water treatment is interrupted.
• Switch cover mode setpoints remotely when a pool cover is deployed to reduce chemical consumption.

Installation

1. 1Connect the Modbus RTU wiring (A and B terminals) from the Idegis Domotic to the RS485 port on your ModbusCloud gateway (MCG or MLP series).
2. 2Configure the serial port on the gateway to 9600 baud, odd parity (1), and 8 data bits to match the Idegis Domotic communication settings.
3. 3Set a unique Modbus slave address on the Idegis Domotic unit and note the address for gateway configuration.
4. 4Import the Idegis Domotic template from the ModbusCloud template library and assign the correct slave address.
5. 5Verify register readings in the ModbusCloud dashboard by comparing displayed pH, ORP, and production values with the local display on the Domotic unit.
6. 6Pay special attention to overlapping register addresses (0 and 1) and confirm that function codes are correctly mapped during commissioning.

Things to watch for

01

Why do I see unexpected values on registers 0 and 1?

Registers at addresses 0 and 1 are used for both status/alarm data and other readings depending on the function code. Verify that the template is using the correct function codes to distinguish between these overlapping registers.

02

What baud rate and parity settings should I use?

The Idegis Domotic requires 9600 baud with odd parity (1). Mismatched parity settings are a common cause of communication failures on the RS485 bus.

03

Can I write setpoints while the system is actively producing chlorine?

Yes. Setpoints for production, pH, ORP, and cover mode can be written at any time. The Domotic controller applies the new values on its next control cycle.

04

The gateway connects but some readings show zero. What should I check?

Ensure the sensors (pH probe, ORP probe, flow sensor) are physically connected and calibrated on the Domotic unit. A zero reading may indicate a disconnected or uncalibrated sensor rather than a Modbus issue.

Registers (27)

27 read / 5 write

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