Accuracy Of The Time - Siemens LOGO! Series Manual

Circuit diagram
representation
R K1
Trg K1
K1
Note
In all functions, R has priority over all other inputs.
Note
After a power failure/power restoration, in the case of time functions the
time that has elapsed is reset, and in the case of the counter the counted
value is reset.

3.5.1 Accuracy of the time

All electronic components have minute differences. For this reason, small
deviations from the time set (T) can occur. In LOGO!, the maximum devi-
ation is 1 %.
Example:
In 1 hour (3600 seconds), the deviation is 1 %, i.e. "36 seconds.
In 1 minute, the deviation is therefore only " 0.6 seconds.
LOGO! manual
EWA 4NEB 712 6006-02
Representation in
LOGO!
Trg
Q
R
T
R
Cnt
Dir
Par
Programming LOGO!
Special function
Retentive on-delay
Counter up and down
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