KSB Calio Circulation pump

Use cases

• Monitor calculated flow and head values on a live dashboard to verify pump sizing and performance.
• Create an alert when error value 1 or error value 2 indicates a pump fault, enabling rapid response.
• Track energy consumption and total flow over time to generate efficiency reports for building owners.
• Remotely adjust setpoint speed to optimize pump performance without a site visit.
• Monitor motor and fluid temperatures to detect overheating conditions before they cause damage.
• Log operational hours per pump to schedule preventive maintenance at the right intervals.

Installation

1. 1Wire the Modbus RTU connection (A, B, GND) from the KSB Calio pump terminal to the RS485 port on your ModbusCloud gateway (MCG or MLP series).
2. 2Set the Modbus slave address on the KSB Calio pump according to the Installation and Operating Manual, ensuring it does not conflict with other devices on the bus.
3. 3Confirm the baud rate on the pump is set to 19200, matching the template configuration.
4. 4Import the KSB Calio template in the ModbusCloud platform and assign it to the correct gateway and slave address.
5. 5Verify that live readings such as calculated flow, pump power, and temperatures appear in the ModbusCloud dashboard.
6. 6Test write functionality by changing the operation mode or setpoint speed from the dashboard and confirming the pump responds.

Things to watch for

01

Which baud rate should I use for the KSB Calio Modbus RTU connection?

The template is configured for 19200 baud. Make sure the pump and the Modbus gateway are both set to 19200, 8 data bits, 1 stop bit, and even parity (unless the pump manual specifies otherwise).

02

Can I read and write the same registers for operation mode and setpoint speed?

Yes. Registers 2100 (operation mode) and 2101 (setpoint speed) support both reading and writing. The template handles this automatically.

03

Where can I find the full register map for the KSB Calio?

Refer to Table 26 on page 54 of the KSB Calio Installation and Operating Manual. This table lists all available Modbus registers, data types, and scaling factors.

04

Does this template work with all Calio pump sizes?

Yes. The template is compatible with KSB Calio 25, 30, 32, 40, 50, 65, 80, and 100. The register layout is the same across these models.

Registers (18)

18 read / 2 write

More RTU templates

Alnor HRU-P

Alnor Systemy Wentylacji Sp. z o. o.

Modbus RTU

Controls Alnor HRU-P heat recovery ventilation units via Modbus RTU.

49 registers7

Alnor HRU

Alnor Systemy Wentylacji Sp. z o. o.

Modbus RTU

Controls and monitors Alnor heat recovery ventilation units via Modbus RTU.

29 registers13

Wattsonic - Schmachtl Sun Energy Box

Wattsonic

Modbus RTU

Monitors Schmachtl Wattsonic hybrid inverter via Modbus RTU

92 registers72

Heidelberg Wallbox Energy Control

AMPERFIED GmbH

Modbus RTU

Controls and monitors Heidelberg Wallbox Energy Control EV charger via Modbus RTU.

22 registers67

connecdoor.controller

connecdoor

Modbus RTU

Controls and monitors smart door access points via RS485

0 registers53

Belimo Air-Water Actuator Modbus RTU

Belimo

Modbus RTU

Controls communicative damper and valve actuators via Modbus RTU.

20 registers46