6.3 version problem with S7 TCPIP

Hi, can you send us please your Unity log. This will help us for finding a solution.

Thanks a lot.

Thomas

Hi Thomas,

I was able to resolve the issue in the meantime.

The problem was related to the connection/reconnection logic inside the S7Interface script (Unity 6.3 + realvirtual 6.3).

Specifically, there was a mismatch between the old Time.time-based reconnect handling and the newer async DateTime-based logic.

Because of this, the interface continuously reset its internal state, which resulted in a permanent "Waiting to connect..." status and no communication cycle starting.

Fix (summary):

Removed or adjusted the old reconnect logic using Time.time (_lastreconnect)

Used only the new DateTime-based reconnect handling (_lastReconnectTime)

Prevented the connection state from being reset in FixedUpdate()

Ensured that the async connection (ConnectS7Async) can complete without being interrupted

After this change:

Connection establishes correctly

Thread cycle starts normally

Communication with the PLC works again

So the issue seems to be caused by a state handling conflict in the current version.

Thanks for your support!

OK thanks for reporting. We will check and put the solution into next release.

In the meantime here is the updated S7Interface script @Adam, maybe you could check - currently I have no live access to an S7:

s7interface

S7 connection failed. I'm getting this error. I'm using the code you sent me.

Thank you, it's working now!