Bus Board; Design And Theory Of Operation - Siemens SIMATIC Panel PC 870 Equipment Manual

Hardware Information
7.6

Bus Board

7.6.1

Design and theory of operation

The bus module is designed as a passive link between the basic board and the
expansion boards. It is mounted with two screws.
The bus module has two PCI expansion slots (1 x short, 1 x long), two long shared
ISA/PCI and one long ISA slot. Expansion boards comply to the ISA specification
(Rev. 3.1) and PCI specification (Rev. 2.0) can be installed. All PCI slots can be
used as masters. The power supply of the expansion boards runs via the
connection of the bus module to the basic board.
Figure 7-1
7-26
Bus board
SIMATIC Panel PC 870 Computing Unit, Equipment Manual
Release 11/02