Detailed descriptions
16.2 Bus board
SIMATIC Box PC 627
Operating Instructions, Release 05/2006, A5E00362052-03
16-17
Pin assignment of the internal USB interface connector, X43
Pin No. Abbreviation Meaning Input /Output
1 VCC 3.3V +3.3V, fused Output
2 VCC 5V + 5 V, fused Output
3 USB3 USB3_M Input /Output
4 USB5 USB5_M Input /Output
5 USB3 USB3_P Input /Output
6 USB5 USB5_P Input /Output
7 GND Ground –
8 GND Ground –
9 GND Ground –
10 GND Ground –
16.2 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 fastened with two screws.
The bus board 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–capable. The expansion modules are supplied with power via the bus board to
motherboard connection.
(1) Slot 1
(2) Slot 2
(3) 12V power supply connection for WinAC module
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