Printronix L5520 - Manual (Page 74)

Chapter 3 Host Interface Menus
74
Idle Response
Values: Enable or Disable. The default value for this parameter is
Disable.
If you enable the Series 1 Idle parameter, then whenever the buffer
is less than 75% full, the printer sends a response character to the
host every two seconds.
NOTE: This parameter is used only with the SERIES 1, 1 CH and
SERIES 1, 2 CH protocols. For SERIES 1, 1 CH
information, see page 69. For SERIES 1, 2 CH information,
see page 70.
One Char Enquiry
The One Char Enquiry mode uses the Poll Character to detect a
request from the host and sends a response back to the host. This
option also allows you to turn this feature on and off. The default
setting is disabled.