Hello, Experts.

I have been testing S7-1500 OPC UA client to Windows(OPC UA server and owned by 3rd party company).

I used OPC_UA_WriteList_C and OPC_UA_ReadList_C for OPC UA communication via PLCSim advanced V5.0 and TIA V17.

But the problem is only one list is accessible. When WriteList has been established, then ReadList has an communication error(16#8024_0000 - The nonce does appear to be not a random value or it is not the correct length). Sometimes communication is established in the opposite direction(ReadList is OK but WriteList got an error 16#8024_0000). They are in the same Client interface.

Because of the problem of not being able to use both functions at the same time, each function was confirmed to be operating properly by communicating with the OPC UA Server.

Are there any experts who have experienced the same issue?