Thanks for the reply userid. I created a cable according to the layout on your second link. It's still not working for me, but I have many more questions...
1.) As a sanity check, when the 16-port Digi is connected to the PC, it adds 16 more COM ports on the computer. So I am printing to COM6 which corresponds to Digi port 4 where the printer is plugged into. Would that be correct?
2.) The Digi has a 10-pin loopback RJ50 plug plugged into a port on the digi which we don't use and don't have configured for any devices. Would that cause any problems?
3.)For the cabling guide you provided, it's recommending that altpin be enabled. In my Digi's web config, in the MEI settings for the port, the only way I can enable altpin (that I'm aware of) is to change it from EIA-232 to EIA-422/485 and checking the 4-wire option so I can finally check the 'enable altpin' option. Is this correct, or should I leave it on EIA-232? I ask because on our other two Digi portservers with printers, we don't even have to config the ports for the printers and they work out of the box.
4.) In the digi config for this port, should the Port Profile be set to 'Printer', RealPort, or completely undefined?
-I am using pin 20 for DTR and then setting the printer to use "DRT- Pin 20" via it's physical configuration switches.
-On the printer its DSR Input Signal is set to Active (other possible option is Inactive which I also tried.).
-Basically I am using the defaults on the printer as detailed on Page 37 here, except for switch 7 and 8 to ON, ON to use DTR over SSD.