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CHAPTER 7: Operation
7.3.1 R
EADING
D
ATA FROM
B
UFFER
M
ODE
P
ORTS
To retrieve data from Buffer Mode Ports, you must first determine which port
buffers contain data. To check port buffers for stored data, access the Command
Mode, type
/S
, and press
[Enter]
to display the Port Status screen. The Port Status
screen’s “Buffer Count” column indicates the amount of data currently stored in
the buffer memory for each port.
To retrieve data from buffer memory, go to a free Any-to-Any Mode or Modem
Mode Port, access the Command Mode as a Supervisor, and issue the /C
(Connect) command by typing
/C
xx
and pressing
[Enter]
, where “
xx
” is the
number or name of the port buffer to be read.
If the port’s buffer is empty, the Port Manager will send a message which reads
“
Connected
xx
, Buffer Empty
”, where “
xx
” is the port number. If the buffer
contains data, the Port Manager will display a prompt that offers four options:
•
Next Screen:
To scroll through data one screen at a time, press the spacebar.
Each time the spacebar is pressed, the next full screen of data will be sent.
•
Scroll All:
To send all stored data without pausing, press [1].
•
Skip/Connect:
To connect to the buffer port without sending data, press [2].
•
Erase/Connect:
To connect to the buffer port and erase stored data, press [3].
Buffered data will be erased immediately and will not be sent.
NOTE
All four of these options also allow pass-through communication with
the device connected to the Buffer Mode port.
To clear data from the buffer, either (a) use the Erase/Connect option or (b) go
to an Any-to-Any or Modem Mode Port, access Command Mode as a Supervisor,
and issue the /E (Erase Buffer) command by typing
/E
xx
and pressing
[Enter]
,
where “
xx
” is the number or name of the port buffer to be cleared.
7.3.2 P
ORT
B
UFFERS
The Port Status screen lists the amount of Buffer Memory currently used by each
port. The Serial Console Port Manager uses buffer memory in two different ways,
depending on the user-selected port mode. When a port is in Buffer Mode, the
buffer memory stores data received from connected devices. (The user issues a /C
connect command from an Any-to-Any Mode or Modem Mode port to retrieve this
data.) When a port is in any other mode, the buffer memory prevents data overflow
at the slower port when two ports are communicating at dissimilar baud rates.
If the Port Status screen indicates an accumulation of data, the /E (Erase Buffer)
command can be invoked to clear the buffer (see
Section 7.3.1
).
