Dear Forum,
I’m currently investigating the possibilities of Codesys virtual control (Linux). The research rig consists of a PC (Debian with real time kernel) with a docker server installed on it. The PC is communicating with a Remote I/O and I have to say the performance is great. The process in the container is running (soft) real time.
Currently I’m checking if it is possible to replace physical controllers by remote I/O’s and run the Codesys applications on a docker server.
If I’m going into this route the reliability of the server is very important (server down, complete installation down), is it possible to make the server redundant without needing 2 separate containers (including licenses), and maintaining the real time behavior?
I’m not only expecting direct answers, if you have any idea or thought they are very welcome.
Kind regards
Alex
Last edit: alexgooi 2025-09-03
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I think it depends on what you consider as redundant. Is it allowed to plug the network cable in another device (server), move the USB key with license to the other device (server) and then start it up? Or should it automatically switch over within msec and take over the communication with the I/O flawlessly without noticing the switchover?
We helped several customers setting up the CODESYS Redundancy functionality and the nice thing is that when you have it up and running, you can easily switchover from active to passive and when you download a new applicaiton, CODESYS handles the update of boot project on the passive controller automatically. Sure this will require an additional license and the license for redundancy, but if your installation is that critical it should be worth it.
Please contact us (Extend Smart Coding) if you need any further information. We could help you setup the configuration and possibly provide the licenses for it (I noticed you are situated in the Netherlands).
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
Dear Forum,
I’m currently investigating the possibilities of Codesys virtual control (Linux). The research rig consists of a PC (Debian with real time kernel) with a docker server installed on it. The PC is communicating with a Remote I/O and I have to say the performance is great. The process in the container is running (soft) real time.
Currently I’m checking if it is possible to replace physical controllers by remote I/O’s and run the Codesys applications on a docker server.
If I’m going into this route the reliability of the server is very important (server down, complete installation down), is it possible to make the server redundant without needing 2 separate containers (including licenses), and maintaining the real time behavior?
I’m not only expecting direct answers, if you have any idea or thought they are very welcome.
Kind regards
Alex
Last edit: alexgooi 2025-09-03
I think it depends on what you consider as redundant. Is it allowed to plug the network cable in another device (server), move the USB key with license to the other device (server) and then start it up? Or should it automatically switch over within msec and take over the communication with the I/O flawlessly without noticing the switchover?
We helped several customers setting up the CODESYS Redundancy functionality and the nice thing is that when you have it up and running, you can easily switchover from active to passive and when you download a new applicaiton, CODESYS handles the update of boot project on the passive controller automatically. Sure this will require an additional license and the license for redundancy, but if your installation is that critical it should be worth it.
Please contact us (Extend Smart Coding) if you need any further information. We could help you setup the configuration and possibly provide the licenses for it (I noticed you are situated in the Netherlands).