Siemens Simatic 620 - Manual (Page 155)

Hardware Information
7-23
SIMATIC Box PC 620 Manual
A5E00131465-01
Internal Serial Port COM2 (V.24)
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 Kbps.
Pin No. Designation Description Input / Output
1 DCD Receiving signal level Imput
2 DSR Readiness for operation Input
3 RxD Received data Input
4 RTS Switch on transmitter Output
5 TxD Transmitted data Output
6 CTS Ready to transmit status Input
7 DTR Terminal ready Input
8 RI Incoming call Input
9 GND Functional ground (reference
potential)
-
10 P5V +5V power supply Output
7.5.3 Assignment of the Internal Ports on the Motherboard
Port Position Connector Description
Memory internal X19, X20 2 SO-DIMM slot, 64Bit
Processor internal X1 Socket for MMC2 mobile processor
Bus extender 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
Power supply
85W
internal X14 40 pin connector for DC signals of the power
supply unit with 85W
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