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CAREL provides a range of support and resources for users of the 1TOOL software, including:

Recent updates to the 1tool suite focus on and modern system compatibility :

For more information, users can visit the official CAREL Training page . Conclusion

1tool is divided into five distinct environments that cover every phase of development—from initial logic design to real-time debugging and field commissioning.

Programmers continue to use 1tool for its flexibility and deep integration with the CAREL hardware ecosystem. It allows for rapid customization of standard HVAC/R applications, such as those used in , Heat Pumps , and Air Handling Units (AHU) .

This patch addresses connectivity instabilities observed when interfacing with newer controller firmware.

1Tool is an integrated development environment (IDE) designed by CAREL to manage the entire application program lifecycle for its programmable controllers, such as the pCO system. It provides a comprehensive suite that bridges the gap between design and field deployment. Key Components of 1Tool

While CAREL introduced the in 2014 and the newer STone environment in 2024 for structured text (ST) programming, 1Tool remains a critical, reliable, and widely used tool for many projects and legacy systems. 1Tool provides a robust alternative for projects requiring traditional function block programming, while STone caters to the demand for advanced, text-based programming. Training and Support

To take advantage of these improvements, it is essential to follow the correct update lifecycle:

The core workspace where engineers build control logic. It utilizes standard IEC 61131-3 functional blocks alongside CAREL’s proprietary HVAC/R specific libraries.

A "What You See Is What You Get" (WYSIWYG) interface for creating the user interface (UI) screens displayed on pGD terminals.