This was a recent application that we configured that might help others. The Matrix 400 barcode scanner from Datalogic was used with a Q series PLC from Mitsubishi. The project includes the ethernet settings required to open up send & receive ports with the scanner. The ladder includes the code necessary to send a "R" read command to the scanner and bringing the buffer into D words. Also, in the video is a demonstration of how the extra serial port on the HMI can be used with a serial barcode scanner. Video: http://www.allied-automation.com/video/AAI...de_ethernet.wmv GX-Developer Project: attached to post aai_barcode_sample.zip