Detailed descriptions
16.5 BIOS Setup
SIMATIC Rack PC 840 V2
16-34
Operating Instructions, Edition 05/2006, A5E00248055-04
Internal printer port LPT1
Mode:
Use this setting to set the operating mode of the printer port. Refer to the
table below to ensure that the setting matches the output device you
connected to the printer port.
Configurable mode
Features
Output Only
Standard Parallel Port -
unidirectional (SSP)
-Standard setting for 8-bit parallel data transfer to the IEEE1284
specification
-Feedback of the output device is only possible via the control channels
Bi-directional Standard
Parallel Port -
bi-directional
Same as SPP - unidirectional, but:
- Feedback of the output device is also possible via 8-bit data channels.
EPP Enhanced Parallel
-High-speed parallel port (data transmission rates between 500 kbps and
2 Mbps are possible)
-Hardware handshake
-different devices can be addressed
ECP Extended Capability
Port
Same as EPP, but:
-separate DMA channel
-FIFO buffer
-Data compression
“PCI Configuration” submenu
Figure 16-14 PCI Configuration submenu