User's Guide _______________________________________________________________________ 
128  __________________________________________________________________ M211107EN-C 
Available Commands 
With the HELP command the operator can get information about the 
available commands. By typing HELP command the operator can get 
information about a specific command. 
The hierarchy and description of the commands are described in Table 19 
below and Table 20 on page 129. 
Table 19  LM21 User Level Commands 
Releases the port for message transmission 
Enables input character echo (default) 
Disables input character echo 
If the message number is not specified, LM21 displays the 
default message without transmission frames. 
Lists available commands. With a command name as a 
parameter, the HELP command shows information about 
Prints the status message 
Prints the configuration parameters 
SET MESSAGE TYPE 
message_number 
Selects the transmitted message type 
SET MESSAGE INTERVAL number 
Sets the interval in seconds for message sending. Zero 
disables the automatic sending. 
Message is directed to the Data port (default) 
SET MESSAGE PORT MAINTENANCE 
Message is directed to the Maintenance port 
Sets unit identifier: an alphanumerical character for 
message and polling identification. A '-' character removes 
the ID. By default no ID is set and space character is used 
Sets name: an alphanumerical string that can be used 
during installation to identify, for example, unit location. The 
maximum string length is 12 characters. 
SET MAINTENANCE_PORT BAUD 
number 
Sets the Maintenance port serial line baud rate to 
300...9600. Communication parameters: 8N1 (fixed). 
Resets the measurement sequence. The following data 
message is measured from the moment all average values 
are erased. Next message is transmitted in (interval +2) 
Sets the command mode timeout in minutes 0 to 30, 0 
disables the timeout, default is 10 min 
SET TERMINAL_LINES number 
Adjusts printouts for used terminal screen. Minimum is 5 
lines, default 24. 
Displays the device name given by the user, the device 
type, and ID 
Lists the software version 
SET DATA_PORT BAUD number 
yes/no 
Sets data port serial line baud rate to 300...19200. 
Verification yes/no asked only if the command is given via 
DATA PORT (default 9600).