Carel 1tool 2.6.46 2.6.57 Sp1 [verified]

It seems you're referencing a Carel software tool with version details: "1tool 2.6.46" and "2.6.57 SP1".

Here's the breakdown:

• Carel is an Italian manufacturer of controllers and supervision systems for HVAC/R (heating, ventilation, air conditioning, and refrigeration).
• "1tool" (or 1Tool) is Carel’s legacy configuration and monitoring software for their pCO, pCOsistema, and other programmable controllers. It’s largely superseded by c.suite (Carel’s modern supervision platform), but still used for older systems.
• Version 2.6.46 and 2.6.57 SP1 (Service Pack 1) appear to be two different releases. Typically, 2.6.57 SP1 would be a later maintenance update to the 2.6.x branch.

Key notes:

• These versions are relatively old. Current Carel tools have moved to newer numbering (e.g., 3.x for 1Tool before c.suite took over).
• 1Tool required a hardware key (dongle) for full functionality and worked with RS-485/RS-232/ethernet gateways.
• SP1 implies bug fixes and possibly updated drivers or device libraries.

What are you trying to do?

• Upgrade from 2.6.46 → 2.6.57 SP1?
• Troubleshoot compatibility with a specific Carel controller?
• Find a download or release notes?

Carel typically provides software only through their Carel Customer Portal (partner login required). If you need the exact changelog or installer for 2.6.57 SP1, contact Carel support or check your local distributor’s archive.

Carel 1tool 2.6.46 2.6.57 SP1 are specific versions of the integrated development environment (IDE) used to program freely programmable controllers, specifically the pCO sistema range

. These versions represent a critical stage in the evolution of Carel 1tool 2.6.46 2.6.57 SP1

HVAC/R (Heating, Ventilation, Air Conditioning, and Refrigeration) automation software, bridging the gap between legacy tools and newer suites like The Role of 1tool in HVAC/R Automation

is an all-in-one suite designed to manage every phase of a software application’s lifecycle, from initial design and simulation to field commissioning. By integrating five distinct environments, it ensures that data flows seamlessly between different development stages, reducing errors and speeding up time-to-market for OEMs. Core Components and Features

The 1tool suite is defined by its modular yet integrated architecture, consisting of several key editors: Software and libraries for HVAC/R applications It seems you're referencing a Carel software tool

The Silent Failure

Users of 2.6.57 SP1 report "Upload successful, but controller freezes every 12 hours." This is usually a runtime mismatch—the SP1 compiler optimized a variable type (likely a WORD to an INT), and the controller's RAM cycles into an overflow.

1. Key Components Overview

The 1tool suite is modular. When working within versions 2.6.46–2.6.57, users interact with three primary sub-programs:

2. Version 2.6.46: The "Legacy Stable"

Released circa 2016-2017, 2.6.46 was the safe zone. Carel is an Italian manufacturer of controllers and

• The Good: It spoke fluent pCO1, pCO2, and pCO3 without argument. It handled RS485 converters gracefully.
• The Bad: It introduced a bug where saving parameter files (.CPR) corrupted the header if the file path had a space.
• The Niche: Technicians love this version because it does not phone home. Later versions try to validate licenses via a dead server. 2.6.46 is standalone.