Having problem communicating with S7-400 Siemens PLC. I have created three projects in the past, so this is not new to me.
I can ping the processor and connect using STEP7. I've tried deleting and re-creating the driver and the variables. I'm still getting the red squares....
I have read the http://www.copadata.com/forums/showthread.php?t=118 post as well.
This is a migrated post! Originally posted on 05.10.2009 by user scotttee. Please be aware that information can be outdated.