Detailed descriptions
16.1 Motherboard
SIMATIC Rack PC 847B
Operating Instructions, 06/2008, A5E02203168-01
129
16.1.4
External interfaces
Interface
Position
Connector
Description
COM1
External
X616
9-pin, standard connector
COM2
External
X615
9-pin, standard connector
LPT1
External
X609
25-pin, standard socket
PS/2 mouse
External
X21 (7 to 12) 6-pin, miniature DIN socket (top socket)
PS/2 keyboard
External
X21 (1 to 6) 6-pin, miniature DIN socket (bottom socket)
USB 2.0
External
X40A, B;
X41A, B;
X420
Port 0, 2; 4, 5; USB ports 1 and 3 at the front
PROFIBUS/MPI
External
X600
9-pin, standard socket, electrically isolated interface
PROFINET
External
RJ45
Ethernet 1 and 2
External
X40, 41
RJ45
VGA
External
X303
15-pin socket
DVI-D
External
26-pin socket
Microphone
External
X60
6-pin 3.5-mm phono jack
Line out
External
X61
6-pin 3.5-mm phono jack
Serial interfaces COM1, COM2 (V24), X616, X615
Serial interface
Pin no.
Short name
Meaning
Input / output
1
DCD (M5)
Receive signal (carrier)
Input
2
RxD (D2)
Receive data
Input
3
TxD (D1)
Send data
Output
4
DTR (S1)
Data terminal ready
Output
5
GND (E2)
Functional ground (reference potential) –
6
DSR (M1)
Ready for operation
Input
7
RTS (S2)
Request to send
Output
8
CTS (M2)
Clear to send
Input
9
RI (M3)
Incoming call
Input