I installed Microsoft POS for .NET 1.14.1 and installed the EPSON OPOS ADK for .NET. I used the OPOS ADK setup and checked "USB" and "Serial" check boxes and created 2 configurations; one for the USB and one for the Serial Port. In the "Serial" setup, I know I have placed the right values since those values came from the printer itself. Using the USB port, I don't get any problems but when I transfer the printer's connection to serial port and using the "CheckHealth", I get this message
ErrorCode: 111
ErrorCodeExtended: 0
Message: It is not Initialized
I know that my serial cable is working because I have tested it on other devices.