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LP 100R Laser Printer Operator's Guide
RS-232 Interface
The serial port is a service aid and not intended for data transmission to the
printer.
Parallel Interface
You can use this menu to modify the settings for the high-speed Parallel Interface.
The factory default settings for this interface are Early strobe, Busy Req of 2,
4.625 for Ta, 0.5 for Tb, and 0.5 for Tc.
Note:
Be very careful when modifying settings for a communication interface.
Incorrect settings can result in the printer receiving garbled, incomplete, or
extra data, causing the printer to operate poorly, print corrupted data, or
"hang" indefinitely.
When you press Enter to accept a setting for an interface, the changes are
applied immediately. You do not need to reset or restart the printer.
The following options are available for the Parallel Interface:
Enable/Disable
Allows you to determine if your system will be transmitting data to the printer
through the parallel port. If another means of data transmission is being used, this
port should be disabled.
Strobe
Specifies whether the Parallel Interface should begin sampling incoming data when
the data strobe begins (Early) or when the data strobe ends (Late).
Busy Req
Specifies the timing of the Busy signal sent by the Parallel Interface in response to
data received. This setting, together with the Ta, Tb, and Tc settings, determines
how the printer signals the host to indicate it is ready for more data. These
settings affect the speed of the protocol, with 0 providing the fastest data
transmission and 3 providing the slowest. You can specify the following settings for
this parameter:
0 (no busy signal)
1 (busy signal begins and ends before acknowledgment)
2 (busy signal overlaps the beginning of the acknowledgment signal)
3 (busy signal completely overlaps the acknowledgment signal)
Rev: 1
Chapter 6: Supervisory Functions
Page 6-26
of 128 pages
April, 2014
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