Operation; General; Log On/Off Procedure - DataKinetics DSC110 User Manual

7. OPERATION

7.1 General

The DSC210 may be configured by the user from either of the two serial ports or
by using telnet over the Ethernet interface. Each serial port may be configured
over a range of baud rates and parity as described in the Command Definitions.
The default configuration for both ports is 9600 bits/s, 8 data bits, 1 stop bit, and
no parity.
The commands that make up the converter Man-Machine Interface Language
(MML) are based on the CCITT blue book recommendations Z.311 to Z.317.
In the following description, input text, numerals and characters that the user is
expected to enter are shown in bold text and responses displayed on the screen
are shown in fixed width text. Syntax elements that are further defined are shown
in angle brackets, e.g. <time of day>.

7.2 Log On/Off procedure

To initiate a dialogue with the converter, the operator must "log on" to one of the
MML interfaces.
To log on to a serial port that configured to use DTR/DSR the connected terminal
should assert DSR. The converter will assert DTR in response and the user may
then enter into a dialogue with the converter. The session is ended by operator
command to the converter, or by the terminal de-asserting DSR or at the expiry of
an auto log off timer. The converter will de-assert DTR in response to any one of
these three. To log on again, DSR must first be de-asserted.
To log onto a serial port that is not configured to use DTR/DSR the carriage return
key should be entered. The session is ended by operator command to the
converter or at the expiry of an auto log off timer.
The two telnet connections provided are accessed using a standard telnet utility.
Ports 8102 or 8103 should be used for the connection (rather than the default port
23).
If a password is specified for the system then when logging on the password will
be required before being allowed to continue. If an incorrect password is entered
the system will again prompt for a password. If an incorrect password is entered 3
times then the port will disconnected. For safety the password is never required
for serial port 1.
When the connection has been established, a message, consisting of the system
identity followed by
<calendar date> <time of day>
logged on at
is output, followed by the command prompt, which is the less than sign "<" The log
on session is ended either by operator command or at the end of an auto log off
time out.
DataKinetics DSC110 / DSC210 User Manual Issue 12 Page 36