Xerox DocuPrint C621, User Manual, Page: 85 / 200

Control Panel
3
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3.3 List of Items on the Menu Screen
3.3.3 Parallel
Specify the settings for parallel interface.
You cannot change the settings on this menu if you entered the Menu
screen when the printer is printing.
Busy-Ack
Specify the output timing for both the BUSY and the ACK signals of the parallel interface.
The BUSY signal indicates to the computer that the printer cannot receive data.
The ACK signal indicates to the computer that the printer is ready to receive data or it has
received data correctly.
•
Ack-Busy (Default)
After ACK signal is received, the BUSY signal changes.
•
Ack-Busy-Ack
BUSY signal changes first and then ACK signal is output.
•
Busy-Ack
BUSY signal changes when ACK signal is being output.
Ack-Busy Busy-Ack Ack-Busy-Ack
In order for the selected settings to take effect, you must restart the
printer. After the setting, you have to switch off the printer and then
switch it on again.
ECP
This is the communications mode for the parallel interface. The following settings are
available:
•
Enabled (Default)
Receive print data using ECP.
•
Disabled
Do not receive print data with ECP.
BUSY
ACK ACK
BUSY
ACK
BUSY