Technical data

Hardware Information
8-30
SIMATIC Box PC 620 Manual
C79000-G7076-C639-02
Internal Serial Port COM2 (V.24), X26
This port is connected in parallel to the external COM2 port. Both ports can
therefore only be used alternatively. The assignment is executed in such a way
that a 1:1 connection to a 9 pin subminiature Cannon socket can be made when
using insulation piercing connecting devices. The maximum cable length is 100cm
with a data transfer rate of 9.6 kBaud.
Pin no. Signal Meaning
1 DCD Receiving signal level (E)
2 DSR Readiness for operation (E)
3 RxD Received data (E)
4 RTS Switch on transmitter (A)
5 TxD Transmitted data (S)
6 CTS Ready to transmit status (E)
7 DTR Terminal ready (S)
8 RI Incoming callf (E)
9 GND GND
10 P5V +5V power supply
8.7.3 Assignment of the Internal Ports on the Motherboard
Port Position Connector Description
Memory internal X19, X20 2 SO-DIMM slot, 64Bit
Processor internal X12 Socket for MMC2 mobile processor
Bus extender internal X1 Socket for bus extender, assigned with ISA
and PCI bus signals
Power supply internal X14 40 pin connector for DC signals
Floppy internal X5 two drives are possible (82078 compatible)
360kB, 720kB, 1.2MB, 1.44MB
3F0h-3F7h, 370h-377h, can be disabled
IRQ 6, edge-triggered
26 pin, socket for flex-lead (notebook
connection)
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 are operable
2.5” hard disks internal X4 170h-177h, 1F0h-1F7h, can be disabled
IRQ14, IRQ15, edge-triggered
44 pin, 2mm male connector (2.5” HD, pri-
mary),
a maximum of two drives are operable