Campbell CS120A, Instruction Manual

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CS120A and CS125 Visibility and Present Weather Sensors
38
SET transmitted data
Example Description
0x02
(1)
STX ^ B
(2)
SET SET
: Delimiting character
Current Sensor ID
: Delimiting character
Sensor ID (may be a new ID)
User Alarm 1 Set
User Alarm 1 Active
User Alarm 1 Distance
User Alarm 2 Set
User Alarm 2 Active
User Alarm 2 Distance
Serial Baud Rate
Sensor serial number (read only)
Visibility Units
Message interval
Polling or Continuous modes
Message Format
RS-232 or RS-485 serial communications enabled
Averaging Period
Sample timing
Dew heater override
Hood heater override
Dirty window compensation
CRC-16 checking on received commands
Sensor power down voltage
Relative humidity threshold
(3)
: Delimiting character
XXXX Checksum (use the valid CRC-16 checksum)
: Delimiting character
0x03
(1)
ETX ^ C
(2)
0x0D
(1)
Carriage return
0x0A Line feed
(1) These values are shown in hexadecimal format not ASCII.
(2) As entered on a keypad.
(3) CS125 only.
14.1.1 Example of a SET Command
14.2 The SETNC Command
The format of the SETNC command is nearly exactly the same as the SET
command. The only functional difference is that the SETNC command does not
commit the values set into flash memory. This means that the next time the sensor
is power cycled it will revert back to its previous settings. This command should
be used when a setting in the sensor is changed regularly, e.g. heater functions, as
this command avoids the risk of wearing out the flash storage memory. Note: this
includes communication data rates as well.
SET:0:0 1 1 1000 1 0 15000 2 0 M 60 1 2 0 1 1 0 0 0 1 7 80 :68A3: