Comtrol NS-link Windows NT - Manual (Page 67)

COM Port Configuration 67
Configuring Advanced COM Port Properties
4. If applicable for your model,
select the appropriate RS
mode to match the
communications mode of the
peripheral that you are
connecting to that particular
COM port.
5. Optionally, make any
necessary changes to fit your
environment:
a. Select a baud rate from
the drop list or enter a
baud rate value to access
higher or lower rates than
are normally permitted by
your Windows 2000 or
Windows XP applications.
b. If applicable, set a time
delay on the transmit data
before a port closes.
Note: You can select the
length of time to
wait for data to
clear the transmit
buffer, before a
close request from a host application is completed. If data is still in
the transmit buffer, you can set a delay time to allow the buffer to
empty. This is typically used with slower peripheral devices such as
printers, to give the data sufficient time to flush through the system.
c. If applicable, select Map 2 stop bits to 1.
Note: You can use this option to map 2 stop bits to 1 bit. If the application
you are using is hard coded to use two stop bits and you are
receiving framing errors, you can implement this option. Leave this
box unchecked to enable stop bits to pass through unchanged.
d. If appropriate, select Wait for physical transmission before completing write.
Note: Use this option to force all write packets to wait until the transmit
data has physically completed the transmission before returning
completion to the host application. The default mode (box not
checked) is to buffer the data in the transmit hardware buffer and
return completion as soon as the packet is in the buffer. This is
typically used with slower peripheral devices such as printers, to
give the data sufficient time to flush through the system.
e. If required, select Emulate modem hardware ring signal.
Note: This emulates a hardware RI (ring indicator) signal.
f. If you want all ports on this device configured to the same settings, select
Clone.
Note: If this box is checked, the changes in the General category area are
applied to all NS-Link ports in the system. If this box is not
checked, the changes you make to the Port Setup options apply to the
selected port only.
g. Change the COM port name of this port by selecting a new name in the
COM name drop list.
h. To renumber all subsequent ports relative to the port displayed in the
COM name drop list, select Renumber all subsequent ports relative to this
port.
The DeviceMaster Serial Hub only supports
RS-232.