I'm working on a Omron C1000H that has a RS232 card C500-LK203 mounted to it. When I try to connect using SYSWIN it allows me to connect but says that it's an UNKNOWN plc and that it doesn't match the project PLC of C1000H. When I try to connect using CX Developer nothing happens, it just won't connect. I've replaced the CPU with a blank CPU and the same thing happens. Has anyone seen this before? Any ideas as to what the problem might be?