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Detailed descriptions
17.6 BIOS setup
"I/O device configuration" submenu
Figure 17-11 COM/LPT configuration submenu
The resources used by an interface are released when you disable the interface in question.
The I/O addresses and interrupts are pre-assigned; it is advisable not to change these
default assignments.
Internal printer port LPT1
Mode:
Configurable mode
Output Only
Standard Parallel Port -
uni-directional (SPP)
Bi–directional Standard
Parallel Port - bi-
directional
EPP enhanced parallel
port
17-54
Use this setting to set the operating mode of the printer port. Refer to the table below to
ensure that the setting matches the data output device you connected to the printer port.
Properties
Standard setting for the 8 bit parallel transfer according to IEEE1284
•
specifications
Feedback of the output device is only possible via the control cables
•
as for SPP – uni-directional, however:
Feedback of the output device is also possible via the 8 bit data
•
cables
Enhanced parallel port (data transfer rate from 500 Kbps up to 2
•
Mbps)
Hardware handshake
•
different devices can be addressed
•
Operating instructions, Release 07/2006, A5E00877780-01
SIMATIC Panel PC 877
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