IBM 5000 manual Serial Port Connectors, Serial Port Connector Pin-Number Assignments, Pin Signal

Serial Port Connectors

Serial ports are used to communicate with printers, plotters, external

auxiliary terminals,

and other

computers. Your

server

provides

two

ser

and

B), and a

special type of serial port

(Management

Port

C,

descr

next

page). You can add more serial ports

by installing

a

serial

ada

the

expansion

slots.

Note: Serial

port A

can be shared by the

system-management

processor

operating system. Serial port B is used by the operating syste

Management port C is controlled exclusively by the system-managemen

processor, cannot be used by the operating system, and cannot

configured using the Configuration/Setup Utility program. See the

“Advanced

System Management

Information”

sectionServerof Librarythis

for information about configuring serial

ports

A

and

C.

Serial ports transferasynchronouslydata ;

they

can transmit

any

number

of

bits

any

time,

with

no

restriction on the

duration

of

the

pauses

between

The serial ports transmit and receive data and commands at a rate o second (bps) up to 115 200 bps. The bits-per-second measurement is comm referred to asbaudtherate.

Each	of the	two serial connectors provided on your Netfinity 5000 serv
9-pin,	D-shell	connector.
		1	5

6 9

Table 4 shows the pin-number assignments for the serial port connectors pin-number assignments conform to the industry standard.

Table	4. Serial Port Connector Pin-Number Assignments
Pin	Signal				Pin	Signal
1	Data	carrier		detect		6 Data	set	ready
2	Receive		data		7	Request		to send
3	Transmit		data		8	Clear	to	send
4	Data	terminal		ready	9	Ring	indicator
5	Signal	ground

Chapter 4. Installing Options83