W&T Com-Server++ - Page 178

178
W&T OPC data transfer
Local Port und Control Port
SETUP Port x
TCP/IP Mode
...
Port List
...
Local Port TCP/UDP
Control Port TCP
If a TCP port differing from the factory default set 8000 was
entered in the OPC server, the corresponding values must
also be configured in the menu branches of the Com-Server
shown above. The Control Port Number used by the OPC ser-
ver is always calculated from the formula Data Port + 1094.
Keep Alive Time
SETUP System
Setup TCP/IP
Keep Alive Time
...
The factory default setting for the keep-alive check is 30 se-
conds. I.e. if there is no data traffic the Com-Server checks
during the set time interval to see whether the connected
network application can be reached. If there is no reply, for
example due to a break in the network infrastructure, the
Com-Server resets the connection internally and thus enables
a new connection to be opened. Details can be found in sec-
tion Menu SETUP System r Setup TCP/IP.