Operating instructions

Detailed descriptions
17.4 BIOS Setup
SIMATIC Panel PC 677B
230 Operating Instructions, 05/2007, A5E01035609-01
"PCI Devices" field
If the PCI devices field is selected, the following submenu appears:
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Figure 17-18 "PCI Devices, slot #1" submenu (example)
[Enabled] The ROM option of the PCI module (if present) is
enabled
ROM scan option:
[Disabled] The ROM option of a PCI module is disabled.
[Enabled] This slot can be assigned PCI master functions Enable Master
[Disabled] This slot can only operate as a PCI slave.
[Default] The number of active PCI clock cycles of the master
modules is determined by this module
[0020H to 00E0H] These settings define the maximum number of
active PCI clock cycles according to the set value.
Latency Timer
You should only use a value different from the default if the module or its
application requires it.