SYNOP code messages with examples

Format options 3 through 5 are similar to options 1 through 3, except they include a SYNOP code (see SYNOP and generic SYNOP code definitions). Partial SYNOP (option 4) and Full SYNOP (option 5) also include present weather fields. The following are examples of the format outputs. Refer to Campbell Scientific output message field descriptions for details about the fields.

Example basic SYNOP format output (visibility units = M):

3 0 0 20428 M 0 20B8  

 

Example basic SYNOP fields1

Message
ID

Sensor
ID

System
Status

Visibility distance

Units

SYNOP code

Checksum
(CCITT)
3 0 0 20428 M 0 20B8

1The messages start with STX (a hexadecimal command character) and end with ETX (a hexadecimal command character), carriage return, and a line feed. These values are not shown in this table.

Example partial SYNOP format output (message interval = 12 s; visibility units = M):

4 0 0 12 21157 M 0 0 0 0.00 0 24.1 -99 5A55  

 

Example partial SYNOP field1

Message
ID

Sensor
ID

System
Status

Message
Interval

Visibility distance

Units

User alarm

Particle count

Intensity

SYNOP code

Temp.

RH

Checksum
(CCITT)
  4 0 0 12 21157 M 0 0 0 0.00 0 24.1 –992 CB0F

1 The messages start with STX (a hexadecimal command character) and end with ETX (a hexadecimal command character), carriage return, and a line feed. These values are not shown in this table.

2The –99 value is reported when a HygroVue temperature and relative humidity sensor is not connected to the CS125.

Example full format output (message interval = 12 s; visibility units = M):

5 0 0 12 20880 M 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.00 0 24.1 -99 CAFA  

 

Example full SYNOP fields1

Mess.
ID

Sensor
ID

System
Status

Message
Interval

Visibility
distance

Units

Average
duration

User
alarm

System alarm2

Particle count

Intensity

SYNOP code

Temp.

RH

Checksum
(CCITT)
5 0 0 12 20880 M 1 0 0

0 0 0 0 0 0 0 0 0 0 0 0 0

0 0.00 0 24.1 –993 CAFA

1 The messages start with STX (a hexadecimal command character) and end with ETX (a hexadecimal command character), carriage return, and a line feed. These values are not shown in this table.

2See System alarms for details.

3The –99 value is reported when a HygroVue temperature and relative humidity sensor is not connected to the CS125.