Hardware Information
7-9
SIMATIC Rack PC 840 Manual
A5E00104826-03
7.5 Ports
The following ports are available on the motherboard of the Rack PCC:
Ports for the connection of external devices
Ports for internal connections (drives, bus boards etc.)
The connector assignments of the individual ports are described in the following
chapters.
7.5.1 External Ports
Port Position Connector Description
COM1 external X30 25 pin, socket, V.24/V.28 and
20mA (TTY potentially isolated)
COM2 external X31 9 pin, standard connector
LPT1 external – 25 pin, standard socket
PS/2 mouse external X22 6 pin, mini DIN socket
PS/2 keyboard external X23 6 pin, mini DIN socket
USB external X36 First and second USB channel, additional
internal third USB channel for front interface
PROFIBUS/MPI external X400 9 pin, standard socket, potentially isolated
port
Ethernet external X700 RJ45
VGA external X303 15 pin, socket
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