Siemens SIMATIC PC 670, Equipment Manual

Page: 156 / 200

Hardware Information
Release 04/02
7-24
Panel PC 670 Computing Unit, Equipment Manual
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
No. Short Name Meaning Input/Output
1 DCD Data carrier detect Input
2 DSR Data set ready Input
3 RxD Received data Input
4 RTS Request to send Output
5 TxD Transmission data Output
6 CTS Clear to send Input
7 DTR Data terminal equipment ready Input
8 IP Incoming call Input
9 GND Functional ground (reference
potential) -
10 P5V +5V power supply Output
7.5.3 Assignment of internal interfaces on the mainboard
Interface Position Connector Description
Memory Internal X19, X20 2 SO-DIMM slot, 64Bit
Processor Internal X1 Socket for MMC2 mobile processor
Bus expansion Internal X10 Socket for bus extender, assigned with
ISA and PCI bus signals
Power supply
105W Internal X13 20 pin connector for DC signals of the
power supply unit with 85W
Floppy 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)
3.5” hard disk 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