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16.2
Bus board
16.2.1
Layout and principle of operation
The bus board is designed as a link between the motherboard and the expansion modules. It
is secured with two screws.
Two models of the bus board are available:
Variant 1 has two PCI slots (1x short, 1x long). It can host expansion modules conforming to
PCI specification (Rev. 2.2) for 5 V and 3.3 V modules. All PCI slots are master compatible.
The expansion modules are supplied with power via the bus board to motherboard
connection.
(1)
(2)
(3)
SIMATIC Box PC 627B
Operating Instructions, 06/2008, A5E00927393-02
Slot 1
Slot 2
12V power supply connection for WinAC module
Detailed descriptions
16.2 Bus board
165
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