When you found the M1XEP what IP Address of the M1XEP? In ElKRP2 click Setup, Options, Network Adapters in the dropdown you should see the IP Address of your computer on the Local Area Network and is the M1XEP the Computer on the same Local Area Network? For example if the M1XEP is at IP address of 192.168.1.100 your computer should be at 192.168.1.xxx address as we..
For the Direct Serial Connection Windows assigned COM Port 1 to the USB to the RS232 Cable? In ElkRP2 click Setup, Communication and under Direct Connect is COM1 listed?