Key facts
- Manuals
- 1
- Languages
- EN
- Last added
- 2026-11-12
Featured Qalcosonic manuals

Qalcosonic E3/E4 Modular Heat Meter Modbus RTU Slave Module User Manual
The Qalcosonic E3/E4 Modbus RTU Slave Module is an independent processor designed to retrieve data from modular heat meters and transmit it to reading systems via an RS485 interface. It supports the Modbus RTU protocol, allowing up to 247 slaves to be connected in a bus or star network configuration. The module operates on a 12-24 V AC/DC power supply and features a status LED and a SET (RESET) button for monitoring communication events and resetting parameters.
Covers: Description · Connection · Status LED and SET button · List of Modbus Data Registers · Read/Write parameters · Error code definitions
Latest Qalcosonic manuals
Qalcosonic E3/E4 Modular Heat Meter Modbus RTU Slave Module User Manual
User Manual 4 pages · 365 KB · ENThis manual describes the Qalcosonic E3/E4 Modbus RTU Slave Module, covering communication protocols, register definitions, and configuration procedures.
Which document do I need?
User Manual
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in Qalcosonic manuals
How do I reset the module parameters?
Turn off the module, wait 10 seconds, press and hold the SET button, then turn on the power and wait for the LED to blink frequently.
From: Qalcosonic E3/E4 Modular Heat Meter Modbus RTU Slave Module User Manual
What is the default Modbus Slave address?
The default address is the same as the meter's M-Bus address.
From: Qalcosonic E3/E4 Modular Heat Meter Modbus RTU Slave Module User Manual
