Printronix Series 5 - Manual (Page 162)

Configuration Menus 4–109
Idle Response
This option is for the Series 1 protocol. When enabled, the printer will send a
response character every two seconds while the number of valid bytes in the
buffer is less than 75 percent of the buffer size.
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
on and off this feature.
Printer State Response (hex)
Online and Buffer Not Full 20
Online and Buffer Full 21
Offline and Buffer Not Full 22
Offline and Buffer Full 23
The Poll Character is removed from the data stream. If the data is set to
ETX/ACK, ACK/NAK, or Series 1, One Char Enquiry is automatically disabled.