The base 2.6.57 version had a critical flaw: Bricking pCO3 units during firmware flash via USB. Specifically, if a technician unplugged the USB cable during the last 2% of a write cycle, the controller’s bootloader would corrupt.
Carel 1tool 2.6.57 SP1 emerged 45 days after the base release. The SP1 patch includes: Carel 1tool 2.6.46 2.6.57 SP1
Between 2.6.46 and the base 2.6.57, Carel introduced: The base 2
Carel 1tool is the proprietary integrated development environment used to program Carel’s programmable logic controllers (PLCs), specifically the c.pCO series (c.pCo1, c.pCo2, c.pCo3, c.pCoMini) and the older c.pCO units. The software suite provides a graphical interface for writing control logic, designing user interfaces (HMI), configuring network parameters, and managing onboard data logging. The progression from 2
The versions 2.6.46 through 2.6.57 SP1 represent a mature lifecycle phase of the 1tool platform, bridging the gap between older legacy systems and the newer "Carel 1tool NEXT" platform. These versions are widely deployed in commercial refrigeration, air conditioning, and humidification markets.
The progression from 2.6.46 to 2.6.57 SP1 was not a radical redesign, but rather a stability and compatibility refinement cycle.
A WYSIWYG editor for creating the user interface shown on the controller's LCD screen.