Carel 1tool Software _top_ Jun 2026
It successfully bridges the gap between low-level programming and high-level building management, putting complete control in the hands of the technician. While not as visually polished as some modern IoT platforms, its reliability, depth of features, and unified approach make it the undisputed standard in the Carel ecosystem.
Developing an application in CAREL 1tool follows a structured, logical sequence designed to minimize errors and ensure field reliability. Step 1: Hardware Selection and Configuration
Connect your PC to the CAREL controller via a programming key or ethernet connection to watch variable values change in real-time within the Strategy Editor.
A standard project file organizes information across several operational layers: Layer Name Primary Actions Hardware Definition
One of the standout features is the ability to connect to multiple controllers simultaneously via a local network (CANbus or Ethernet). This allows a single laptop running 1Tool to manage an entire supermarket’s HVAC system or an industrial chiller plant without re-plugging cables. carel 1tool software
Link alarm variables to global display rules, ensuring that a high-pressure trip immediately flashes on screen, sounds the buzzer, and triggers a physical alarm relay. Step 4: Compilation, Simulation, and Download
Carel 1tool is the legacy development software for the programmable controller platform, primarily used for customizing control strategies in the pCO series controllers . Introduced in 2007, it replaced the older EasyTools and served as the primary environment for HVAC/R (Heating, Ventilation, Air Conditioning, and Refrigeration) applications until the introduction of newer tools like c.suite (2014) and STone (2024). Key Features & Capabilities
The function block library offered by 1Tool includes three levels of complexity:
Always perform a "Upload Project" before editing. CAREL controllers store the source code (POU files) internally. Use 1Tool to "Upload & Save" to your hard drive. If you brick the logic, you can re-download the original. Step 1: Hardware Selection and Configuration Connect your
: Fully functional for 90 days. After expiration, saving and compiling are disabled.
1tool is an all-in-one programming suite that allows users to manage every phase of an HVAC/R automation project. Unlike general-purpose industrial automation software (like standard PLC IEC 61131-3 editors), 1tool is highly specialized for thermodynamic and HVAC/R applications. It features dedicated libraries for compressors, electronic expansion valves (EEVs), fans, and chillers. The Five Core Development Modules
: 1tool allows for deep customization of the user interface on PGD1 terminals and other display types connected to the controllers. Key Technical Components Functional Blocks
Modern HVAC systems rarely act alone. 1tool makes it simple to integrate controllers into Building Management Systems (BMS) using protocols like . Getting Started with Carel 1tool Link alarm variables to global display rules, ensuring
If you are new to the software, keep these best practices and resources in mind:
Unlike legacy software that required different applications for different controller families, 1Tool acts as a single "pane of glass." It supports communication over , Ethernet (TCP/IP) , and USB , making it exceptionally versatile for both factory floors and remote field installations.
: Specifically manages the masks and graphical elements of the controller terminals, supporting multi-language GUIs. Connectivity and Network Configuration
: Facilitates field setup by allowing users to configure unit parameters and perform local or remote diagnostics via serial or modem connections. Network Editor
