Sierra Wireless MP 880W Guía de usuario Pagina 68

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MP880W Modem User Guide
62 2130795
Analog input setup
TheAnalogInputwindow(Tools > Options > MP > Input/Output)
isusedtoconfiguredevicesonthefouranaloginputs.Eachtab
correspondstoapin:
Toconfigureananalogsensororgauge,selectthetabthat
correspondstothepinyouareusingandcompletethefieldsas
follows:
Label:Enteradescriptionofthesensororgauge(Measured
Voltage
,Vehicle Speed,etc.),upto20characterslong.
Rawvalue:Showstheanalogvaluefromtheinput(read
only).Theanaloginputhasa10bit(1024step)resolution,
sotherawvaluerangeisbetween0and1023.
Zeroscale:Entertheminimumvaluefortheunitsyouare
reporting(usedtoconverttherawanalogvalueofzero).
Fullscale:Enterthemaximumvaluefortheunitsyouare
reporting(usedtoconverttherawvalueof1023).
Currentvalue:Showstheresultingconvertedvalueusing
thezeroandfullscalesentered.
Unit:Specifytheunitsoftheinput(volts,km/h,etc.),upto
20characterslong.
Example
Ifyouaremeasuringtemperature,andthethermometeryou
haveconnectedtotheI/Oconnectormeasuresbetween‐30
(rawvalue0)and+50(rawvalue1023 )degreesCelsius,then
yourzeroscaleis
-30.0andyourfullscaleis50.0.Yourlabel
couldbe
“Temperature”,andunits,“degrees C”.
Themeasurementsarecalculatedforthe81degreerange
(between‐30and+50),whichisdividedinto1024steps
(0.0791
degreesperunitstep).Areadingof25degrees
(56
degreesabovetheminimum)wouldthereforeshowaraw
valueof708(56
degrees/0.0791degreesperunit).
Analog Tab Connector Pin
Input 1 14
Input 2 7
Input 3 15
Input 4 8
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