Vaisala FS11P - CHAPTER 5 THEORY OF OPERATION

Chapter 4 _________________________________________________________________ Operation
VAISALA _______________________________________________________________________ 131
Default Settings for FS11P Use
Table 21 below lists the default settings for LM21 in FS11P use.
Table 21 Default Settings for LM21 in FS11P use
Parameter
Default Setting
Message type
7
Message interval
0 (Off)
Message port
Data
Unit_id
-
Name
-
Data_port baud
9600
Data_port parity
none
Maintenance_port baud
9600
Port timeout
10
Terminal_lines
24
Contamination_compensation
On
Hood_heaters
On
Dew_heaters
On
Message_frame
1 (FSI type)
LM21 Standard Initialization
In order to put the LM21 into a proper operational state, the Interface
Unit transmits an initialization request command. This triggers a set of
communication settings to accommodate the communication with the
Interface Unit.
Interface Unit  LM21 - Initialization Request:
<SOH>LM <STX>&DOfsisetup<ETX>8395<EOT><CR><LF>
Action:
LM21 sets the following configuration parameters:
- no automatic message reporting (MSG.INTERVAL 0)
- standard message type is #6, fsi message (MSG.TYPE 7)
- framing is enabled and set to fsi type (FRAME.TYPE 1)
- any device id is removed (DEVICE.ID *)
Interface Unit  Measurement - Initialization Answer:
<SOH>LM <STX>ACK<ETX>D24B<EOT><CR><LF>