Please provide a screen shot of the PCo Socket Source Agent connection ports. From the logs, it is clear to me that you do not have the correct termination characters defined in the settings. Make sure that you do not define both a Length and Terminator values, only Terminator in your case.
it also appears that the scanner is emitting the data in small packets instead of a single stream. This is usually because of either network traffic congestion or the scanner is set up to send a character at a time.
In order to capture the data, you will need to set up a Notification and send the received data (for now) to a defined Simulation destination so you can examine what was sent in the notification payload.
Regards, Steve