Hardware Information
7-26
SIMATIC Rack PC 840 Manual
A5E00104826-03
7.6
Bus Board
7.6.1
Design and Mode of Operation
The bus board is designed as a passive link between the motherboard and the
expansion modules
.
It is mounted by means of four screws.
The bus board has seven PCI slots and five long ISA slots. Ten expansion
modules corresponding to ISA specifications (Rev. 3.1) and PCI specifications
(Rev. 2.0) can simultaneously be inserted. All PCI slots are master capable. The
expansion modules are powered via the link between the bus board and the
motherboard and via the auxiliary ATX contect directly from the power supply unit.
PCI
ISA
A
B
1
1
49
49
52
52
62
62
B
A
1
1
Auxillary ATX
18
18
31
31
D
C
1
1
Figure 7-10 Connector Assignment on the Bus Board
Connector Assignment Auxillary ATX
Pin No.
Designation
Description
Input / Output
1, 2, 3
GND
Masse
4, 5
+3.3 V
+3.3 V
6
+5 V
+5 V
Содержание SIMATIC Box PC 840
Страница 8: ...Preface viii SIMATIC Rack PC 840 Manual A5E00104826 03 ...
Страница 179: ...B 1 SIMATIC Rack PC 840 Manual A5E00104826 03 Technical Specifications B ...
Страница 208: ...Glossary Glossary 22 SIMATIC Rack PC 840 Manual A5E00104826 03 ...
Страница 212: ...Index Index 4 SIMATIC Rack PC 840 Manual A5E00104826 03 ...