Carel 1tool 2.6.46 2.6.57 Sp1 | Latest — 2025 |

: The software allows for real-time monitoring of system performance. You can view data logs, adjust setpoints, and control outputs directly from the software.

Disclaimer: This article is for informational purposes. Always refer to the official Carel technical documentation and observe safety protocols when handling live HVAC/R controllers. Carel 1tool 2.6.46 2.6.57 SP1

Carel 1tool is the professional development environment specifically designed for programming CAREL's range of programmable controllers, including the pCO sistema series . Versions and 2.6.57 SP1 represent key stable releases in the software’s lifecycle, providing HVAC/R (Heating, Ventilation, Air Conditioning, and Refrigeration) engineers with a robust platform for application design. Overview of Carel 1tool : The software allows for real-time monitoring of

| Controller Model | Works with 2.6.46? | Works with 2.6.57 SP1? | Recommended Version | | :--- | :--- | :--- | :--- | | pCO2 (all variants) | | Yes (Full) | 2.6.46 (lighter CPU load) | | pCO3 (F/W < 3.5) | Yes (Full) | Yes (Full) | Either | | pCO3 (F/W 3.5 - 4.0) | Partial (Alarms broken) | Yes | 2.6.57 SP1 | | pCO5 (F/W 1.x) | No (Not recognized) | Yes (Limited) | 2.6.57 SP1 (but upgrade to 3.x if possible) | | PlantWatch T | No | Yes | 2.6.57 SP1 | | pCOe (Embedded) | No | No (Use Powervision) | N/A | Always refer to the official Carel technical documentation

represent stable iterations of the 1tool platform, which was the primary development standard before being succeeded by newer environments like 1tool 2.6.46:

: Configures communication between controllers and peripherals on the pLAN network.