Framing Errors - Printronix H-SERIES P7000 User Manual

Chapter 4
HOST INTERFACE
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.
The Poll Character is removed from the data stream. If the Data Protocol is
set to ETX/ACK, ACK/NAK, or Series 1, One Char Enquiry is automatically
disabled.

Framing Errors

Possible errors that can occur when the printer's serial interface settings do
not match those of the host computer.
•
Enable (default). If a framing error occurs, a fault message will display on
the control panel.
•
Disable. If a framing error occurs, a fault message will not display on the
control panel.
72
Table 5. One Char Enquiry Response Characters
Printer State
Online and Buffer Not Full
Online and Buffer Full
Offline and Buffer Not Full
Offline and Buffer Full
Response (hex)
22
23
20
21