Printronix L5020 - Manual (Page 72)

Chapter 3 Printer Configuration
72
Ready Polarity
Values: Standard (default) or Inverted.
This parameter must be set to match the Ready signal polarity of
your host computer.
When the printer is ready to receive data, it sends a Ready signal to
the host.
Online Polarity
Values: Standard (default) or Inverted.
This parameter must be set to match the Online signal polarity of
your host computer.
The printer sends an Online signal to the host indicating that
communication can be accomplished whenever the Ready signal is
true.
Paper Inst (Instruction) Polarity
Values: Standard (default) or Inverted.
This parameter must be set to match the PI line signal polarity of
your host computer.
The Paper Instruction line (PI line) controls paper motion.