Use the text comment tool liberally within the FBD sheets. An un-commented, complex visual web of lines can be incredibly difficult to debug months down the road.
Do not place all your logic in the fastest execution loop. Put calculation-heavy thermodynamic formulas in slower tasks to prevent CPU overloading and watchdog reset errors.
Using the Strategy Editor, developers build the core thermodynamic logic. The application relies on standard libraries provided by CAREL, which include:
HVAC/R equipment rarely operates in isolation. The Network Editor configures external communications.
simulation editor, allowing developers to test algorithms and user interfaces before hardware deployment. User Interface Management carel 1tool software
At its core, 1tool uses a graphical programming interface. Instead of writing lines of text-based code (like C++ or Structured Text), developers use .
Control logic requires an accessible operator interface. The suite includes an integrated module for designing user menus on built-in controller screens or external pGD displays.
To run CAREL 1tool efficiently, developers typically require a standard Windows-based engineering workstation. System Requirements
The software is designed to leverage CAREL’s high-efficiency hardware, such as DC inverter compressors and electronic expansion valves, out of the box. Use the text comment tool liberally within the FBD sheets
Directly link UI text fields and numerical gauges to variables defined in the FAD environment.
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
CAREL 1tool is a comprehensive development environment used to create control software for CAREL programmable controllers. Unlike standard generic programming platforms, 1tool is tailor-made for HVAC/R applications. It bridges the gap between complex software engineering and thermodynamic system management.
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. The Network Editor configures external communications
USB ports or RS485 serial converters (such as the CAREL CVSTDUMOR0) for hardware communication.
1Tool is designed to integrate seamlessly with other Carel products for a complete workflow.
A critical part of any HVAC/R unit is how the end-user or technician interacts with it. The UI Editor allows developers to design the screens for local displays (like the pGDE or pGDN displays) and touchscreens. It features a WYSIWYG (What You See Is What You Get) interface to easily position text, variables, animations, and alarms. 3. Network Editor
To maximize efficiency, 1tool utilizes a hierarchy of functional blocks that cater to different levels of programming complexity:
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