Detailed descriptions
15.1 Motherboard
Panel PC 870 V2, Computer Unit
Operating Instructions, Edition 03/2004, CD Documentation and Drivers
15-3
15.1.3 External ports
Interface Positio
n
Connecto
r
Description
COM1 externa
l
X30 25-pin socket, V.24/V.28
COM2 externa
l
X31 9-pin, standard connector
LPT1 externa
l
- 25-pin, standard socket
PS/2 mouse externa
l
X22 6-pin, miniature DIN socket
PS/2
keyboard
externa
l
X23 6-pin, miniature DIN socket
USB 2.0 X36 X36 first (X36 below) and second USB channel, (X36 above)
PROFIBUS /
MPI
externa
l
X400 9-pin, standard socket, potentially isolated interface
Ethernet externa
l
X700 RJ45
DVI externa
l
X303 26-pin socket
Serial port COM1, X30
The serial port (COM 1) on the device has the following pinout:
Serial port COM 1 (socket)
PinNo. Designation Meaning Input/output
1 – Shielding –
2 TxD (D1) Serial transmit data Output
3 RxD (D2) Serial receive data Input
4 RTS (S2) Request to send Output
5 CTS (M2) Clear to send Input
6 DSR (M1) Data set ready Input
7 GND (E2) Functional ground (reference
potential)
–
8 DCD (M5) Data carrier detect Input
9 – – –
10–17 – Unassigned –
18 – – –
19 – – –
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