Problems with Modbus TCP

Hello everyone. 
Scada system Wincc V7.4 SP1 is used. 
I didn't log into the server for a 
long time, and when I came in I saw it
(picture). Connection to Siemens 
s7-1200 controllers via Modbus TCP/IP 
protocol, since during operation it is
more stable than the native OMS + driver.
Has anyone come across this? I would be
grateful for any assistance. I am also
attaching a Log file. 
Sorry for my English.