Innowater SMC Salt Chlorinator

Use cases

• Monitor pH and ORP values on a live dashboard to verify water quality between service visits.
• Create an alert when pH drifts outside the acceptable range so a technician can respond quickly.
• Adjust the pH and RX setpoints remotely from a mobile device without travelling to the pool site.
• Log production percentage and cell voltage over time to detect scaling or cell degradation early.
• Switch the chlorinator on or off remotely during seasonal pool shutdowns or maintenance windows.
• Manage multiple Innowater SMC installations from one ModbusCloud account to streamline fleet operations.

Installation

1. 1Connect the ModbusCloud gateway (MCG or MLP series) to the same local network as the Innowater SMC Modbus TCP interface using an Ethernet cable or a shared switch.
2. 2Verify the IP address of the Innowater SMC Modbus TCP interface and ensure it is reachable from the gateway subnet.
3. 3In the ModbusCloud portal, add a new device and select the Innowater SMC Salt Chlorinator template from the library.
4. 4Enter the IP address and Modbus TCP port (default 502) of the SMC interface in the device configuration screen.
5. 5Confirm communication by checking that live values such as pH, ORP, and production percentage appear on the dashboard.
6. 6Optionally configure alerts and setpoint controls in the ModbusCloud portal to enable remote management for the end customer.

Things to watch for

01

What baud rate or serial settings do I need to configure?

The Innowater SMC uses Modbus TCP, so there are no serial parameters to set. You only need the IP address and TCP port of the Modbus interface.

02

Why do some registers return unexpected values after a firmware update?

Register addresses on the SMC interface are spread across a wide range and may shift with firmware changes. Cross-check the register list supplied by Innowater with the template mapping and update any addresses that have moved.

03

Can I read and write the setpoints from the same register?

Yes. Registers such as pH setpoint (address 94) and on/off (address 2) are both readable and writable. The template handles this automatically, displaying the current value and allowing you to send a new one.

04

What data type are the registers?

All registers are uint16 (unsigned 16-bit integer). No 32-bit register pairing or special byte-order configuration is needed.

Registers (17)

17 read / 6 write

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