I do in fact have the 2711-nd1W installed on an XP (and even set up a win98 VM just in case).

I never used a USB/serial converter, but you may need one that enumerates as COM1 - COM4 many software products from that era could only use the first four COM port numbers. I do not think that the PanelBuilder 1200 Transfer Utility ever used RSLinx at all. There was a purpose-built 2711-NC1 cable, but my recollection is that I used a 1784-CP10 (which was meant for PLC-5 serial ports), plus a null-modem converter.

Since it shows Pin 2 is RX and Pin 3 is TX, that means this is a 'DCE' type port, so you need a 'straight through' serial cable from a PC. 3 of the User Manual shows the pinout for the serial port, and only refers to an 'upload/download cable'.

I think Aardwizz is correct: you could use the onboard menus to set the serial port for Printer or Download. You've already figured out the keyswitch that puts it into 'Transfer' mode. So we take a deep breath and think about that 25-pin serial port on the PanelView. My recollection is that the Windows-based software only worked with v5 or later firmware. So you've got a PanelView 1200 Classic, which could use DOS-based PanelBuilder 1200 (2711-ND1) or Windows-based PanelBuilder 1200 for Windows (2711-ND1W). The difference between the appearance of the DOS-like Classic and the Windows 3.1-like Enhanced graphics is unmistakable, though. There were a few upgrades and new production using the 12' hardware that were called a 'PanelView 1200E' were PanelView Enhanced terminals, as well as the more popular PanelView 1400E (CRT) and PanelView 1000E (flatscreen). RA calls the original CRT character-graphics based PanelView terminal a PanelView 'Classic'. While my experience goes that far back, the details are a little hazy.

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