Security notifications registered by the PLCnext Runtime System Available from 2022.0 LTS The following tables show the security-related notifications that are predefined in the PLCnext Runtime System and will be issued by the PLCnext Runtime System. Note: For non-security-related notifications, see Notifications by PLCnext Runtime. Compatibility Due to breaking changes… Read More
Alarm function blocks in IEC 61131-3 programming Introduction Essential alarm status features Every alarm is oriented towards the OPC UA Alarms & Conditions specification and has these properties: Property Meaning or purpose Restrictions AlarmId The unique name of the alarm on the device. … Read More
Notification Logger Use Case The Notification Logger enables saving of notifications in a database so the they can be used for analyzing firmware and applications. Saved notifications can be queried via RSC interfaces. The Logger Archives offer functions for acquiring and filtering of incoming notifications as well… Read More
PLCnext Store resources The PLCnext Store provides software applications (“apps”) with which you can directly and easily expand the functions of a PLCnext controller. As a developer of software solutions, you can also create your own apps and distribute them in the PLCnext Store. About 300 highly elaborated pieces of code… Read More
Real-time DataLogger reference Available from firmware 2019.6 Sources and data types The DataLogger can record data from any IN or OUT ports and variables. The following data sources are available: Global Data Space IN and OUT ports Type real-time program (C++, IEC 61131-3 and MATLAB®/Simulink®) – task-synchronous mode… Read More
Configuring PROFINET devices for redundancy Available from 2022.0 LTS with RFC 4072R Adding PROFINET devices to the automation project For for the general procedure Configuring PROFINET devices. Configure the System redundancy data hold time for each PROFINET device. The System redundancy data hold time is the maximum time that the PROFINET device… Read More
System redundancy with RFC 4072R Available from firmware 2022.0 LTS with RFC 4072R The RFC 4072R is a high-availability PLCnext Control with explicit redundancy functionality. Some commissioning steps differ from those for other PLCnext Control devices. In the course of the system redundancy with RFC 4072R, we describe only these differences. From firmware release 2025.6, RFC 4072R controllers can be connected to… Read More
IP addresses at redundant controllers Available from 2022.0 LTS with RFC 4072R Understanding the structure of IP addresses In redundancy mode, the preset IP addresses are used as the system IP address of the respective Ethernet interface. The process-leading controller (= PRIMARY controller) can additionally be reached via the system IP… Read More
System redundancy error codes Available from 2022.0 LTS with RFC 4072R The most recent status or error message is indicated as a digit, visible in the PLCnext Engineer at the RDNCY_ERROR system variable. This is how to decode and handle the messages: Digit Status or error message Description Remedy 1 OwnRdncyTypeChanged… Read More
Alarms in PLCnext Technology Use Case The wastewater basin in the sewage plant is about to overflow, a sluice blocks, or an important drive overheats? On all these events you must get an immediate and reliable message from your system control. Especially for this purpose we introduced the Alarms Dispatcher… Read More
