sarond,
I do a variation on this. I use PuTTy so I can connect the ip address and use Port 23. This gets me to the old VT100 terminal style interface from the SX2000 days. From there you can get to the command screen and to the formprint that you want to do. For example if I want all the Multiline Set Key Assignments I would enter:
fo mu s k as /instance all /port lpr3 (abbreviated but you can write the whole thing)
System reports: FORMPRINT:Request is in progress
I immediately issue command:
en p/non (enable print/non queued) Scrolling of the requested form now starts and PuTTy captures the result.
When the system reports Formprint Complete I do a 'Ctrl C' to go back to the command screen
PuTTy is configured as
Telnet
Session Logging = Printable output
Terminal - Auto wrap mode innitially on
Terminal - Local echo = auto
Terminal - Local line editing = auto
Terminal - Remote-controlled printing = none
Keyboard - backspace key = control-?
Keyboard - Function keys and keypad = VT100+
I have not tried it, because I'm an old fossil, but I bet you could connect with PuTTy(with logging turned on) on port 1754 and issue the commands from the web based application of the 3300