Why does the communication between my network card and the
ethernet communication processor not work?
You are using STEP 7 V5.x, a S7 ethernet communication
processor (e.g. CP 343-1) and a regular network card (e.g. 3Com
The functionality of the communication with the network card has
been verified. When you try to load program blocks with the CP into
the CPU, you receive the message: "Download 33:17088: Online: Can
not load the selected communication driver. File not found".
Install the software "S7-1613" from the SIMATIC NET CD (not
later than 05/2000), on which you can also find the software
"Softnet". This will install two missing files which are needed for
the TCP-PG function.
Alternatively, you can download ServicePack 1 for Softnet IE V 3.3
under entry ID 7540167.
Driver update, function supplement