Siemens PANEL PC 877 User Manual

Detailed descriptions 

 

17.1 Motherboard 

 

SIMATIC Panel PC 877 

17-18

 

Operating instructions, Release 07/2006, A5E00877780-01 

17.1.6 

Internal interfaces 

Pin assignment of the internal interfaces 

 

Interface 

Position 

Connector 

Description 

Memory 

Internal 

X3, X4 

2 DIMM sockets, 64-Bit 

Processor 

Internal 

X1 

Socket for FCPGA mobile processor 

Bus expansion 

Internal 

X20 

Socket for bus expansion, assigned 

with ISA and PCI bus signals 

Power supply 

Internal 

X50, X5000 

20-pin power supply connector 

ATX 12 V expansion 

Floppy 

Internal 

X26 

One drive is possible (82078 

compatible) 

 360 K, 720 K, 1.2 MB, 1.44 MB 

3F0h–3F7h, 370h–377h, switched 

IRQ 6, edge triggered  

34-pin socket for standard FD drive 

3.5" hard disk drive  

Internal 

X7 

170h–177h, 1F0h-1F7h, switchable 

IRQ 14, IRQ 15, edge triggered  

40-pin, 2.54mm male connector (3.5" 

HD, primary), up to two drives can be 

operated 

CD-ROM, (back-

packed) 

Internal 

X10 

170h–177h, 1F0h–1F7h, switchable 

IRQ14, IRQ15, edge triggered  

44-pin, 2 mm male connector 

CD-ROM, integrated 

Internal 

X12 

170h–177h, 1F0h–1F7h, switchable 

IRQ14, IRQ15, edge triggered  

1 x 41-pin (Hirose DF9-41, CD-ROM, 

Master) 

PS circuit for CPU fan 

Internal 

X41 

Power supply for CPU fan, 3-pin male 

connector 

PS connection for 

equipment fan 

Internal 

X42 

Power supply for equipment fan, 3-pin 

male connector 

Backup battery 

Internal 

X49 

Power supply for backup battery, 2-

pin male connector 

Power supply 

connection for 19" front 

components with 12 V 

DC power supply 

Internal 

X45 

Additional power supply connector for 

19" fronts