AMR SENSORS- Mode d’emploi / User guide version V1.2
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Page
of 41
In the case of an analogue sensor (0-10 V version)
, the formula is as follows: I = value x 2.048 x 337.3/(220 x 67.3)
Procedure:
•
Convert the value of the frame into a decimal: 0 x 063CCE = 408782 as a decimal
•
Apply the following formula: I= 408782 x 2.048 x 337.3/(220 x 67.3) =4.001 V)
•
The result is:
4.001 V
If, in our example, our sensor is a temperature sensor that measures a range from -40°C to +80°C, 0 V corresponds to -40°C and 10 V corres-
ponds to +80°C (note: we are working from the principle that the sensor used has a linear response curve).
To convert the value in V into a temperature, you have to apply the following formula:
T° =-40 + (V x 120/10) Result: -40 + (4.001 x
120/10) = -8°C
Note:
•
V = the value in V
•
-40 = the offset to be applied
•
120 = the spread of the temperature range (from -40 to +80)
•
10 = the range of the voltage measurement (from 0 to 10 V)
5.2. Log/ History frame
The log frame is sent hourly, regardless of the interval for sending the data.
Example:
FF19444606000000100319AD02B50000002F2F00FD3A06100E00B515000000CE3C066B1904BF
5.2.1 Format
SOF
L-Field C-Field M-Field
A-Field
CI-Field
Data-Field
Short-Header
FF
19
44
46 06
00 00 00 10 03
19
AD
02
B5
00 00 00
2F 2F 00
FD
3A
06
Start data from
Transmitter
Taille de tr
ame
Control
Manufacturer ID
SN Number
Version
Device type
Code de tr
ame
Function code
Access Number
Status
Signature
Check encryption
Historic type
Primary VIF
Secondary VIF
Value type
Data-Field
RSSI
10 0E 00
B5
15 00 00
00
02
CE 3C 06 6B 19 04
BF
Sample r
ate (s)
Historic number
Time T
ag
Partial F
rame
Nb of data blocks
Hisctoric v
alues
