I have set up a TCP/IP port to print to a Citizen CL-S700 barcode printer connected to a TL-PS310U print server. I followed the guide from https://www.tp-link.com/en/support/faq/1622/. But nothing is printed. Using the raw protocol the job stays in the print queue. With the LPR protocol the job is leaving the queue but still not printing.

The printer is listed in the web interface of the print server as device 1 with link status online and device status ready.

What am I missing?

Thanks, Chris