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Global Data Space (GDS)

Global Data Space (GDS) The GDS enables communication relationships and data exchange between tasks and programs that were created in different programming languages. The GDS also ensures that inconsistencies as shown in the following example are prevented:  While tasks are being processed and data is being exchanged… Read More

Configuration files

Configuration files Although PLCnext Engineer is the recommended tool you can load programs and program instances onto the controller even without using the PLCnext Engineer. This also applies to files in .pcwlx libraries programmed in C++ by using the Eclipse® IDE with PLCnext Technology Add-in, or Visual Studio® with PLCnext Technology Extension, or the PLCnext CLI. But before transferring… Read More

Core components of the PLCnext Technology

Core components of the PLCnext Technology PLCnext Technology is an open firmware platform executed on a Linux operating system with real-time patch. Different firmware components forming the core functions are called core components. These core components are a fixed part of the PLCnext Technology firmware. They cannot be modified. The core components… Read More

Netload Limiter

Netload Limiter Available for these devices: AXC F 1152 and AXC F 2152 from 2022.0 LTS AXC F 3152 from 2020.6 RFC 4072S from 2019.9 With the Netload Limiter, PLCnext Control devices offer an option to limit the CPU load caused by received Ethernet telegrams.  During normal operation, an increased amount of Ethernet telegrams may occur for a short time. Read More

Function extensions

Function extensions A main feature of PLCnext Technology is the modular extensibility on user’s side, for example by means of so-called “function extensions”.  How these function extensions differ from apps, see C++ programming on PLCnext Technology Function extensions for internal processes Users can add their own function extensions to PLCnext Technology. The… Read More

System Manager and PLC Manager 

System Manager and PLC Manager  System Manager PLCnext Technology is by definition an open platform. This means that as a user you can integrate your own components and programs. During firmware startup, the System Manager ensures that all integrated components and programs are configured and started in the correct… Read More

Diagnostic log files

Diagnostic log files The diagnostic log files contain status information, warnings, error messages, and debugging messages. They offer information on the firmware start-up and operation of a controller of the PLCnext family. It is a good compromise between information and system performance. You will find the files… Read More

Retain variables in Extended Retain Handling

Retain variables in Extended Retain Handling General retain memory concept Traditionally a PLC offers two types of memory: Volatile memory: values are lost on power down (usual RAM).  Retain memory: values are kept during power down so these values can be restored on power return. Read More

Diagnostics

Diagnostics If something goes not they way you want in your automation project, these methods will help to find and remedy the cause: Notifications Notifications of PLCnext Runtime Security Notifications of PLCnext Runtime Log files output.log PLCnextapp log Additional resources for… Read More

Managing components

Managing components PLCnext Technology is based on components that are included via the IComponentInterface interface (see IComponent and IProgram).  ACF – Application Component Framework The Application Component Framework (ACF) is a part of the System Manager and manages the function extensions. The ACF is a framework that enables… Read More