ASEM CPU 1021/A - J27 - Connectors DB9 Serial Ports RS232 COM1 & COM2; J28 - Connector Front Plate; J29 - Connector Mouse;Keyboard (Encoder)

CPU 1021/A User’s Guide
32 Asem S.p.A.
J27 - Connectors DB9 serial ports RS232 COM1 & COM2
PIN
Signal
I/O
1
Data Carrier Detect
INPUT
2
Receive Data (RS-232)
INPUT
3
Transmit Data (RS-232)
OUTPUT
4
Data Terminal Ready
OUTPUT
5
GND
/
6
Data Set Ready
INPUT
7
Request To send
OUTPUT
8
Clear To send
INPUT
9
Ring Indicator
INPUT
J28 - Connector front plate
PIN
Signal
PIN
Signal
1
H
2
X/XL
3
S/XR
4
Y/YT
5
L/YB
6
LED LAN
7
LED FAULT
8
LED HD
9
GND
10
+5V
J29 - Connector mouse/Keyboard (encoder)
PIN
Signal
PIN
Signal
1
non presente
2
N.C.
3
MOUSE CLOCK
4
+ 5 V
5
GND
6
MOUSE DATA
7
+ 5V
8
GND
9
KEYBOARD DATA
10
KEYBOARD CLOCK