Internal Ports - Siemens SIMATIC Rack PC 840 V2 Operating Instructions Manual

16.1.5

Internal ports

Pin assignment of the internal ports
Interface
Memory
Processor
Bus expansion
Power supply
Floppy
primary EIDE
Secondary EIDE
(e.g. CD ROM)
PS connection for CPU
fan
PS connection for
equipment fan
Connection for SCSI LED
Internal USB port
Front panel port
Assignment for SCSI activity connector, X39 Type JST B2B-PH-SM3-TB
Pin No. Abbreviations
1 NC
2 SCSI HD_N
SIMATIC Rack PC 840 V2
Operating Instructions, Edition 05/2006, A5E00248055-04
Position Connector
Internal X3, X4, X5
Internal X1
Internal X20
Internal X50, X5000
Internal X26
(e.g. hard X7
disk drive)
Internal X11
Internal X41
Internal X42, X43
Internal X39
Internal X2033
X44
Meaning
-
0-V level means that the SCSI port is active
Detailed descriptions
16.1 Motherboard
Description
3 DIMM sockets, 64-bit
Socket for FCPGA mobile processor
Socket for extended bus, assigned with
ISA and PCI bus signals
20-pin power connector, 4-pin power
connector
Two drives can be installed (82078
compatible) 360 kB, 720 kB, 1.2 MB,
1.44 MB 3F0h–3F7h, 370h–377h,
switchable IRQ 6, edge triggered
34-pin, socket for standard floppy disk
drive
Internal
170h–177h, 1F0h–1F7h, switchable
IRQ14, IRQ15, edge triggered 40-pin,
2.54 mm male connector, operation of up
to two disk drives
CPU fan power supply, 3-pin male
connector
Power supply for equipment fan
(controlled), 3-pin, male connector
Input for SCSI drive activity display
Connection for the USB port cable to the
front panel of the computer
OP connection
Input /Output
Input
16-11