59
14.
DATA SAMPLING
14.1.1
Defining sampling frequency and RAW data (M-Bus cable)
This section analyses how the GE552Y051 samples the values. Figure 53 shows a curve sampled with
= 1⁄
equal to one hour throughout the entire day. The GE552Y051 manages five sampling periods,
which are:
•
15 minutes
96 daily samples
•
1 hour
24 daily samples
•
6 hours
4 daily samples
•
12 hours
2 daily samples
•
1 day
1 daily sample
•
1 month
1 monthly sample
Figure 53 - Sampling
The samples stored in the GE552Y051 according to the sampling frequency are defined as
RAW
samples.
RAW samples will always refer to the consulted day and you can store up to 96 samples for every day of
the year for 250 devices. The samples of the previous year will be cyclically deleted from the GE552Y051
mass memory (Ref. Chapter 16).
Pay special attention to the documentation of the devices before
configuring the GE552Y051 sampling frequency. If the sampling value is too high, it can cause:
•
no response from the devices in the field following the exhaustion of the possible responses from
the unit.
•
early device battery depletion compared to that declared in the datasheet
0
1000
2000
3000
4000
5000
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
S
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p
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Time axis
Sampling