I have Wincc V8 on Windows server 2019. I used two drivers Modbus TCP and OPC. Modbus TCP has 70 connection and OPC has 1 connection. Some time all Modbus TCP connections disconnected but OPC working. it happens some time 2-3 days or 24 hrs . Ping to those ip address working. After restating runtime it connects. Please help to find out the cause.

Hello,

Have you already installed the latest update for WinCC V8?

Updates für WinCC V8.0 und WinCC V8.0 ASIA

Best regards