Carel 1-Tool software!
: Uses a vast library of pre-made CAREL functions, from simple logic gates to complex thermodynamic calculations. carel 1tool software
To manage communication protocols and device networking. Carel 1-Tool software
The software is available for free download from Carel’s official website. It connects to controllers via USB, Ethernet, or serial interface (using Carel’s programming keys or gateways). While the software is free, some advanced features or protocol libraries may require a license key. The software is available for free download from
If you are still using pCOSoft, it is time to migrate. CAREL will eventually phase out support for legacy versions. 1Tool can import .pcs (pCOSoft) projects, but reverse compatibility (saving back to pCOSoft) is not possible.
In the world of HVAC/R and refrigeration control, efficiency isn't just about hardware—it’s about how easily you can interact with that hardware. is the Italian manufacturer’s answer to the growing complexity of connected systems. Far more than a simple configuration editor, 1Tool is a universal software suite designed to unify the entire lifecycle of a Carel controller: from initial programming to on-site maintenance and cloud integration.
Imagine arriving at a rooftop unit with a "High Pressure Alarm." Instead of navigating a cryptic 7-segment display on the device, the technician plugs a laptop into the controller’s service port. Using 1Tool, they instantly see:
