You must configure the 1784-KTX card using the RSLinx Driver Configuration software. You cannot use the configuration driver supplied with the 1784-KTX card.
Follow the instructions found in the Rockwell RSLinx software to install the RSLinx software.
Use the Rockwell Software RSLinx OEM driver configuration to configure the 1784-KTX card. Follow the instructions in your RSLinx documentation to do this. See the following sections in the on-line Help for RSLinx software:
How to Configure Communications Hardware
How to Configure Communications Drivers
RSLinx installation procedures.