Chapter 4 _________________________________________________________________ Operation 
 
VAISALA ________________________________________________________________________ 65 
If no input is given within 10 minutes, FS11 closes the line 
automatically. The timeout time is user-selectable. 
If FS11 receives an OPEN command targeted to another device while in 
command mode, it executes a CLOSE command. 
CLOSE Command 
The line can be released to automatic data messages with the CLOSE 
command. 
If no ID is defined the FS11 sensor answers: 
FS11 LINE CLOSED 
If an ID is defined, for example, as A, the FS11 sensor answers: 
FS11-A LINE CLOSED 
 
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 9 
below. In addition to the user level command set, there is a second, 
advanced, in-depth maintenance and service level command set. The 
access command to this advanced level is LEVEL 1. The command 
prompt shows the current command set level. In the advanced level the 
prompt is 1>. 
Table 9  FS11 User Level Commands 
Releases the port for message transmission. 
Enables input character echo (default). 
Disables input character echo. Set off when operating 
with the RS-485 connection. 
If the message number is not specified, FS11 displays 
the default message without transmission frames. 
FS11 displays all messages. 
HELP command alone lists available commands. With a 
command name as a parameter, the HELP command 
shows information about that specific command. 
Prints the status message, with the optional CHECK 
parameter prints a short status check message. 
Prints configuration parameters. 
SET MESSAGE TYPE message_number 
Selects the transmitted message type. 
Selects the MITRAS Single Base emulation mode. The