Can anyone tell me if there is another serial interface module for a s7300 plc other than the cp340. I have been told that this exists but my current vendor is very slow about returning my calls regarding this. If someone could save me the time of researching this on my own it would be greatly appreciated. Also, if this is out there, how is it used? Is it similar to the 340 which has software where the com settings are done and specific fcs and fbs that you use or is it different? thanks in advance guys
john
john