8.2
SEL-2032
Communications Processor
Instruction Manual
Date Code 20120126
Serial Port Communications and Commands
Command Operation
<STX><MESSAGE LINE 1><CR><LF>
<MESSAGE LINE 2><CR><LF>
.
.
.
<LAST MESSAGE LINE><CR><LF>
<ETX><STX> <PROMPT><ETX>
Figure 8.1
Noninteractive Message Format
Each message begins with the start-of-transmission character STX (ASCII
character 02) and ends with the end-of-transmission character ETX (ASCII
character 03). Each line of the message ends with a carriage return and line
feed.
➤
The CAN character (ASCII character 24) aborts a pending
transmission. This capability is useful in terminating an
unwanted transmission.
➤
You can send control characters from most keyboards with the
following keystrokes:
XON:
<CTRL+Q>
(hold down the Control key and press Q)
XOFF:
<CTRL+S>
(hold down the Control key and press S)
CAN:
<CTRL+X>
(hold down the Control key and press X)
Command
Access Levels
A multilevel password system with three access levels provides security
against unauthorized access. This system allows you to give personnel access
only to those functions they require. The password system is disabled when
the password jumper is inserted on the main board of the SEL-2032. See
for information on using this jumper. Passwords
can be set or disabled on an access level basis using the
PASSWORD
Each level has an associated screen prompt that indicates the active level.
shows the access levels of the prompts as well as the commands
available from each access level.
WARNING:
This device is
shipped with default passwords.
Default passwords should be
changed to private passwords at
installation. Failure to change each
default password to a private
password may allow unauthorized
access. SEL shall not be responsible
for any damage resulting from
unauthorized access.
!
Table 8.1
Access Level Characteristics
(Sheet 1 of 2)
Access Level
0
1
2
Prompt
*
*>
*>>
Available
Commands
ACCESS
2ACCESS
ACCESS
AUTO
BROADCAST
CLEAR
2ACCESS
ACCESS
AUTO
BROADCAST
CAL
CARD
CLEAR
CONTROL
COPY
DATE
DATE
DEFRAG
DCF
a
DCF
DNPMAP
FILE
DNPMAP
FILE
Содержание SEL-2032
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