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Service Components – Overview

Service Components – Overview Service Components are built-in benefits for programmers that come with the PLCnext Runtime System. Depending on the firmware release on your PLCnext Control, the set of features can be different.  Find a detailed description to every service component via the respective link in the first column. Built-in communication… Read More

Execution and Synchronization Manager (ESM)

Execution and Synchronization Manager (ESM) PLCnext Technology also features task handling. The ESM performs task handling, monitoring and chronological sequencing of programs from different programming languages. Each processor core of a controller is managed by one ESM. One ESM is therefore assigned to one processor core. If a controller… Read More

plcnextapp log file

plcnextapp log file The plcnextapp tool manages apps, e.g. the mounting and unmounting. The plcnextapp tool is called by the AppManager. The plcnextapp.log file is used to record status and error messages that are issued by the plcnextapp tool. You will find the file by default on your controller under… 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

Global Data Space data types configuration

Global Data Space data types configuration Configuration with PLCnext Engineer You can configure the GDS by connecting IN and OUT ports of programs with the PLCnext Engineer software (see Importing libraries into PLCnext Engineer).  In PLCnext Engineer, select the desired use as an IN or OUT port in the Data… Read More

Diagnostic log file Output.log

Diagnostic log file Output.log The Output.log diagnostic log file contains status information, warnings, error messages, and debugging messages. It offers a lot information of the boot up and operation of a controller of the PLCnext family. It is a good compromise between information and system performance. You will find… Read More

Supported elementary data types

Supported elementary data types The following table shows all supported data types throughout the standards.  Note: All these data types can be used in a one-dimensional array. All these data types but arrays can be used a structure.   PLCnext Engineer C++ C#… 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 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 PROFINET® diagnostic error codes… Read More

PROFINET® diagnostic code

PROFINET® diagnostic code Available from firmware 2019.6 How to Tutorial video Note: These videos are based on the firmware release 2021.0 LTS. From release 2022.0 LTS, the PROFINET® diagnostic features in the Web-based Management (WBM) are extended as described in the Diagnostics – PROFINET topic. Note: Tutorial videos… Read More