SATELLINE-3AS
User Guide, Version 2.3
80
9.2.10
Saving modified values into the internal memory
After all desired modifications have been performed, they have to be saved in order to make
them permanent (until next modification). This is accomplished by choosing selection ”EXIT”
from the main menu. The display will then show a message (see below) asking a confirmation of
the performed modifications.
By choosing ”Y
YES” all modifications are saved into the non-volatile memory inside the radio
modem. By choosing ”NO” all modification performed are cancelled and previous settings
remaining in the non-volatile memory.
Press ”YES” to save all
modifications into the non-
volatile memory and ”NO”,
if modifications are to be
cancelled.
Do you want to
make changes
permanent?
No þ YES
9.3 Changing parameters using the SL-COMMANDS
The controlling terminal device can change the configuration settings of a radio modem. This is
accomplished with the help of SL-commands, which can be used during data transfer. SL-
commands can be used to change e.g. the frequency or addresses. It is also possible to
interrogate a radio modem in order to gain information concerning current settings that are in
use. The terminal device is either a PC or a programmable logic (PLC) together with suitable
(terminal) program. SL-commands must be enabled using
Programming Mode
before they can
be used.
An SL-command is a one continuous string of characters, which is separated from other data by
pauses that are at least three (3) characters long. No extra characters are allowed at the end of
an SL-command. Serial interface settings are the same as in data transfer and pin 12 of the
serial connector MUST NOT be connected to ground (GND). SL-command is properly
recognised also in the case when the command string is terminated in <CR> (=ASCII character
no. 13, Carriage Return, 0x0d) or <CR><LF> (<LF> = ASCII char. no. 10, Line Feed, 0x0a).
If multiple SL commands are sent to the radio modem the next command can be given after
receiving the response ("Ok" or "Error") of the proceeding command. In addition, it is
recommended to implement a timeout to the terminal software for recovering the case when no
response is received from the radio modem.
When the power of a radio modem is switched off the configuration settings of a radio modem
always return to values defined initially using the
Programming Mode
, thus resetting any settings
changed using SL-commands during power on. It is however possible to save settings changed
by using SL-commands and to make them the new configuration settings.
The radio modem will acknowledge all commands by returning an "O
OK" (command carried out
or accepted) or the requested value, or an "E
ERROR" (command not carried out or interpreted as
erroneous) message.
