SOMMER SPA - SPA Data Output Protocols; Protocol Values Structure

User Manual SPA Snow Pack Analyser
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7. Data output
The data is output by the RS-232 interface. The protocol is either the standard protocol or the MIO
protocol. Basic protocols do not include the auxiliary values capacitance and phase.
7.1. Protocol values
The output values are separated in blocks of four values (Tab. 3). Every block corresponds to a string in
the output protocol and is identified by the string ID. The string ID starts with the Device identifier (see
page 17).
o The white [ ] shaded strings are output in each case.
o The light gray [ ] shaded strings are output if the extended version of the protocol types is used
( RS232 output 

 Protocol type ).
o The light green [ ] shaded strings are only output if the sensors are activated (not reasonable at the
SPA system) in the menu SPA parameter 

 Active sensors.
o The light orange [ ] shaded string is only output if in the menu SPA parameter  Protocol output
set.
sensor 1 … slope sensor
sensor 2 … horizontal sensor in 100 mm height
sensor 3 … horizontal sensor in 300 mm height
sensor 4 … horizontal sensor in 500 mm height
i String label Values 1 Values 2 Values 3 Values 4
00 Main results
Sensor 1
ice content
Sensor 1
water content
Sensor 1
snow density
Sensor 1
SWE
01
First auxiliary
results
Sensor 2
ice content
Sensor 2
water content
Sensor 2
snow density
Sensor 2
SWE
02
Second
auxiliary results
Sensor 3
ice content
Sensor 3
water content
Sensor 3
snow density
Sensor 3
SWE
03
Third auxiliary
results
Sensor 4:
ice content
Sensor 4
water content
Sensor 4
snow density
Sensor 4
SWE
04
Peripheral
results
Snow depth Analog Input 1 Chip temperature
Length of sensor 1
in snow
05
Aux. peripheral
results
Analog Input 2 Analog Input 3 Analog Input 4 Analog Input 5
06
Sensor 1:
aux. values
Sensor 1
C (low freq.)
Sensor 1
C (high freq.)
Sensor 1
phase (low freq.)
Sensor 1
phase (high freq.)
07
Sensor 2:
aux. values
Sensor 2
C (low freq.)
Sensor 2
C (high freq.)
Sensor 2
phase (low freq.)
Sensor 2
phase (high freq.)
08
Sensor 3:
aux. values
Sensor 3
C (low freq.)
Sensor 3
C (high freq.)
Sensor 3
phase (low freq.)
Sensor 3
phase (high freq.)
09
Sensor 4:
aux. values
Sensor 4
C (low freq.)
Sensor 4
C (high freq.)
Sensor 4
phase (low freq.)
Sensor 4
phase (high freq.)
Tab. 3: Table of MIO values
String ID = Device identifier + i i … two digit index