I have Freezing problem at Telvent HU-AF.

Of course, I give you detail. I have 30 pieces rtu in area. These rtu connected with fiber line. Power Scada is in Control room and including to fiber line. I am running multi process mode. I have 2 pieces Server and 2 pieces client. Freezing is not in Power Scada. RTU is freezing. RTU cannot answer two queries from the same port at the same time and closes the tcp port (does not allow access to the device). That's why I've defined two ports in RTU. There are now two different ports in RTU. Scada server 1 and Scada server 2 are querying the device. RTUs on the field are still freezing. There is no period. Sometimes it works without freezing for 3 days and sometimes it works without freezing for 20 days. But in the end it freezes. Working times can vary. I still have a problem.

Of course, I give you detail. I have 30 pieces rtu in area. These rtu connected with fiber line. Power Scada is in Control room and including to fiber line. I am running multi process mode. I have 2 pieces Server and 2 pieces client. Freezing is not in Power Scada. RTU is freezing. RTU cannot answer two queries from the same port at the same time and closes the tcp port (does not allow access to the device). That's why I've defined two ports in RTU. There are now two different ports in RTU. Scada server 1 and Scada server 2 are querying the device. RTUs on the field are still freezing. There is no period. Sometimes it works without freezing for 3 days and sometimes it works without freezing for 20 days. But in the end it freezes. Working times can vary. I still have a problem.