Siemens PANEL PC 877 User Manual

Detailed descriptions 

 

17.2 Bus board 

 

SIMATIC Panel PC 877 

17-24

 

Operating instructions, Release 07/2006, A5E00877780-01 

17.2 

17.2 

Bus board 

17.2.1 

Layout and principle of operation 

 

The bus board is designed as a link between the motherboard and the expansion modules. It 

is mounted with two screws. 

The bus board has two PCI expansion slots (2x long), two long shared ISA/PCI and one long 

ISA slot. It can host expansion modules conforming to ISA specification (Rev. 3.1) and PCI 

specification (Rev. 2.0 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. 

 

Figure 17-1  Bus board