Serial Ports - IBM 8669 - Eserver xSeries 342 Hardware Maintenance Manual

Pin Signal
15 Ground
16 DIFFSENS
17 Term power
18 Term power
19 Reserved
20 Ground
21 +Attention
22 Ground
23 +Busy
24 +Acknowledge
25 +Reset
26 +Message
27 +Select
28 +Control/Data
29 +Request
30 +Input/Output
31 +Data 8
32 +Data 9
33 +Data 10
34 +Data 11

Serial ports

The server has two standard serial ports, Serial port A and Serial port B. The
operating system can use both serial ports, Serial port A and Serial port B.
Some application programs require specific ports, and some modems function
properly only at certain communication port addresses. You might need to use the
Configuration/Setup Utility program to change communication port address
assignments to prevent or resolve address conflicts.
Viewing or changing the serial-port assignments: To view or change the
serial-port assignments:
1. Restart the server and watch the monitor screen.
2. When the message Press F1 for Configuration/Setup appears, press F1.
3. From the main menu, click Devices and I/O Ports; then, press Enter.
4. Select the serial port; then, use the arrow keys to advance through the settings
available.
5. Select Save Settings; then, select Exit Setup to exit from the
Configuration/Setup Utility main menu.
Serial-port connectors: The following table shows the pin-number assignments
for the 9-pin, male D-shell serial-port connectors on the rear of the server. These
Pin Signal
49 Ground
50 Ground
51 Term power
52 Term power
53 Reserved
54 Ground
55 -Attention
56 Ground
57 -Busy
58 -Acknowledge
59 -Reset
60 -Message
61 -Select
62 -Control/Data
63 -Request
64 -Input/Output
65 -Data 8
66 -Data9
67 -Data 10
68 -Data 11
69
Installing options