Assignment Of Internal Interfaces On The Mainboard - Siemens SIMATIC PC 670 Equipment Manual

Hardware Information
Internal serial interface COM2 (V.24), X26
This port is connected in parallel to the external COM2 port. Both ports can
therefore only be used as alternately. They are assigned such that a 1:1
connection can be established to a 9-pin D-SUB socket when insulation
displacement connectors are used. The maximum cable length is 100 cm at a data
rate of 9.6 kbaud.
Pin Short Name
No.
1 DCD
2 DSR
3 RxD
4 RTS
5 TxD
6 CTS
7 DTR
8 IP
9 GND
10 P5V
7.5.3

Assignment of internal interfaces on the mainboard

Interface
Memory
Processor
Bus expansion
Power supply
105W
Floppy
3.5" hard disk
7-24
Meaning
Data carrier detect
Data set ready
Received data
Request to send
Transmission data
Clear to send
Data terminal equipment ready
Incoming call
Functional ground (reference
potential)
+5V power supply
Position Connector Description
Internal X19, X20 2 SO-DIMM slot, 64Bit
Internal X1 Socket for MMC2 mobile processor
Internal X10 Socket for bus extender, assigned with
ISA and PCI bus signals
Internal X13 20 pin connector for DC signals of the
power supply unit with 85W
Internal X5 two drives are possible (82078 compati-
ble)
360kB, 720kB, 1.2MB, 1.44MB
3F0h-3F7h, 370h-377h, can be disabled
IRQ 6, edge-triggered
26 pin, socket for flex-lead (notebook con-
nection)
Internal X41 170h-177h, 1F0h-1F7h, can be disabled
IRQ14, IRQ15, edge-triggered
40 pin, 2.54mm male connector (3.5" HD,
primary),
a maximum of two drives can be connec-
ted
Panel PC 670 Computing Unit, Equipment Manual
Release 04/02
Input/Output
Input
Input
Input
Output
Output
Input
Input
Input
-
Output