This is a program used build and modify ladder programms for most OMRON PLC's ,programable logic controllers. This section operates well. All of the commands I've used have worked well creating and modifying ladder programs.
The rub appears when access of a connected PLC is requied to upload and test programs.
CX-Server is used to control network cards, ports, and serial ports for this application. I'm confident that the base problem lies in ether the interface between cx-server and cx-programmer or cx-server and the lower level ports.