Printronix L5020 - Manual (Page 230)

Appendix Interfaces
232
Centronics Parallel Interface Configuration
The printer is configured for the Centronics interface via the
Centronics Interface menu, as described on page 66. The following
interface configuration parameters may be modified to meet
specific application requirements:
Data Bit 8 Enable* or Disable
Paper Inst Line Enable or Disable*
Data Polarity Standard* or Inverted
Strobe Polarity Standard* or Inverted
ACK Polarity Standard* or Inverted
Busy Polarity Standard* or Inverted
Slct (Select) Polarity Standard* or Inverted
Fault Polarity Standard* or Inverted
Paper Instr Pol Standard* or Inverted
PE Polarity Standard* or Inverted
NFAULT/PE Clt Act Together* or Act Separate
* = Factory default setting