Bad device stn 0

[MatthewMunoz]

Hello,

I am working on an iX T12B project connected to a Simatic S7-1200 PLC using S7 ISO over TCP/IP. A couple of days ago I started getting the Notify Window popping up on the HMI with the message "Controller1: bad device stn 0". The HMI still reads and writes from/to the PLC fine. If I transfer an older version of the project onto the HMI, I don't get the Notify Window.
The controller settings, such as timeout, retries, station, rack and slot are identical in the two versions.
What could cause the message?

Thank you in advance for you assistance

Matt

[mark.monroe]

I would look at your how you associate tags in the HMI with controller addressing. You might be trying to access an address in the controller via the HMI that the controller doesn't understand.

If you open up your old and new project you can check the Controller driver version by selecting your controller and clicking settings. If both driver versions are the same, it most likely is something in the way you are addressing the controller in the HMI.

[MatthewMunoz]

Hi Mark,

Thanks for the tip. Problem solved.

Best regards,

Matt