EB 8389-1S EN 21
Data logger
3 Data logger
The data logger records the measured vari-
ables (valve position x, set point w, set point
deviation e and signal pressure p
out
). The re-
corded data are plotted against time in a
graph.
Note:
The data logger is interrupted and
must be reactivated when one of the
following events occurs:
−
Failure of power supply of the posi-
tioner
−
Failure of power supply of the exter-
nal solenoid valve
3.1 Permanent data logging
The measured variables are logged at the
rate dened in 'Sampling time' and saved in
a circular buffer, which holds 100 data
points per measured variable at one time.
Note:
You can read the measured data
logged over the past 24 hours from
the 'Data logger' graph when the Di-
agnostics folder (> Data logger) is left
open over this period.
Fig. 1: Diagnostics > Data logger
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