Hello,
I would like create a data recorder by using the Network Variable generated by my PLCs.
The idea is to use a raspberry, collect informations on the network and write it on a big SD or USB.
I can use a CPU PLC just for that but it is sad and i will be limited by the limit of data storage.
Is it possible to decrypt UDP transmission for NVL?
NVL is not encypted. You just need to open port 1202 (default for NVL) , listen and use your “template” to see what is inside. Check node-red-contrib-nvl (node) - Node-RED or node.js jisotalo/codesys-client: Node.js Codesys client for reading and writing PLC data using network variable lists (NVL)
Thanks 
We will work on that