You can increase the reliability of your control system by providing your PLC with a redundant PLC. The redundant PLC is able to take over the application execution at runtime. This can prevent system failures, for example.
This project (see file 'Redundancy Examples.zip') contains two sample projects and two videos to illustrate the configuration of redundant PLCs.
The first example 'RedundancyRaspiDemo.project' shows how two Raspberry Pi can be configured to operated redundantly (see video 'ReduRaspiSubtitle.mp4'). The second example 'RedundancyRaspiVisu.project' shows how redundancy can be used with a visualization (see video 'ReduRaspiVisu.mp4').