Creating a fetch/write request to retrieve data from a PLC

[KarolisL]

I think you are mixing some things: what you are listening right now is OUC.

Examples for this communication can be found here:

Siemens 1200 plc to node red (TCP)

I am trying to communicate with a Siemens 1212 PLC using the open TCP blocks. On the node red side I have a TCP in (Port 2000) tied to a debug node. Additionally I have an inject tied to the TCP out node on port 2001. On the PLC side I have it set to "active" communication to node red (port 2000). The receive from Node red is a passive connection (port 2001). In my flow I have a "connect" indication and can send data from the PLC to node red. On the node red side, on the send (NR -> PLC) it sh…

This mechanism is used for event based stuff where you have to create strings.

For 90% of use cases where you need to read/write data from PLC you use

probably the same manual you were referring to.

For connection to PLC in this mode, use S7 node which was recommended, slot1, port:102.
If something is wrong then there are a lot of video tutorials and forum posts related to this topic.