Siemens SIMATIC Box PC 840 Manual page 144

Hardware Information
LS240/CD ROM
integrated
V.24/TTY mo-
*
dule
PS connection
for CPU fan
PS connection
for device fan
Backup battery
* The line current (TTY) interface is an optional product feature.
Port to the Bus Unit, X20
The SIMATIC Box PC 840 has a bus board with two PCI slots, one ISA slot and
two shared ISA /PCI slot. Expansion cards can be installed to ISA specification
(Rev. 3.1) and PCI specification (Rev. 2.0) with a maximum length of 265mm (175
mm for shared ISA/PCI modules). All the PCI slots can be used as masters. Only
5V PCI modules are operable.
The power supply to the expansion cards is effected via the connection of the bus
board with the motherboard. The -5V voltage is not provided for the power supply
and is produced from the -12V on the bus unit via in-phase voltage control.
The connection to the motherboard is effected by a gold-plated two-part connector
of the type 'PCI, 64 bit'. All the necessary bus signals (ISA and PCI) are applied to
this connector. The following table shows the connector assignment.
7-22
internal X12
internal X28, X29
internal X41
internal X42
internal X49
170h-177h, 1F0h-1F7h, can be disabled
IRQ14, IRQ15, edge-triggered
1x41 pin (Hirose DF9-41, (LS120, secondary
master, CD ROM, secondary master with
connected LS120drive, otherwise master),
a maximum of two drives are operable
Connection for V.24/TTY transmitter hybrid *
(physical interface)
Power supply for CPU fan,
3 pin, male connector
Power supply for device fan,
3 pin, male connector
Power supply for backup battery,
2 pin, male connector
SIMATIC Box PC 840 Manual
A5E00085984-04