RFL Electronics RFL 9660, Инструкция по эксплуатации, Страница: 108 / 312

RFL 9660 RFL Electronics Inc.
August 18, 1998 5-11 (973) 334-3100
"Flow control" governs the rate at which information passes between the RFL 9660 and the
device. Without flow control, data to and from the device might be corrupted. The flow control
setting must be set to match the flow control requirements of the device connected to the port.
(Refer to the manual supplied with the device or contact its manufacturer for more information).
The RFL 9660 uses character-based flow control for "outbound" messages from the RFL 9660
to the device. Messages going from the device to the RFL 9660 ("inbound" messages) are fed
to a 256-character buffer. The RFL 9660 will exercise its flow control for inbound messages
after 32 characters are sent to the buffer. This gives the sending device 224 characters to start
using its flow control. If the buffer fills up before the device halts its output in response to the
RFL 9660's handshake, data corruption will occur.
m - Communications Parameters
This selection lets you set the port's communication parameters to match those of the device
connected to it. It is usually best to match the port's communication parameters to the device,
rather than modifying the device's parameters to match the port. (Refer to the manual supplied
with the device or contact its manufacturer for more information.)
Format: PORT n> M [ENTER]
The following prompt will appear on your display:
Baud: 0 = 300 1 = 1200 2 = 2400 3 = 4800 4 = 9600 5 = 19.2K: _
Find the baud rate that matches the device baud rate. Enter the number next to it, and then
press the [ENTER] key. The following prompt will appear on your display:
Data bits: 7 or 8: _
Enter the number that matches the number of data bits for the device connected to the
port, and then press the [ENTER] key. The following prompt will appear on your display:
Parity: 0=none, 1=even, 2=odd: _
Find the parity setting that matches the device parity. Enter the number next to it,
and then press the [ENTER] key. The following prompt will appear on your display:
Stop bits: 1 or 2: _
Enter the number that matches the number of stop bits for the device connected to
the port, and then press the [ENTER] key.
q - Quit
This selection lets you leave the port configuration mode and return to your normal
prompt.
Format: PORT n> Q [ENTER]
If you want to save the changes you have made, use the "S" command described
on page 5-21 of this section. If you do not save the changes, they will be lost the next
time the RFL 9660 is powered down.