Mitsubishi Electric Melsec Q Series User Manual page 29

4 Functions
(3) Sample use case
1) Procedure for continuously measuring periodic electric energy
If you turn Periodic electric energy measurement flag (Yn1/Yn2) to ON only for the extent of
time you want to measure, this module accumulates the power starting at the previously
measured amount. Usage procedure is the same as 1) in (2).
An example is provided below.
Periodic electric energy 1
Periodic electric energy 1 measurement flag (Yn1)
Periodic electric energy 1 data completion flag (Xn1)
2) Procedure for measuring periodic electric energy after every reset
If you turn Periodic electric energy measurement flag (Yn1/Yn2) to ON only for the extent of
time you want to measure, this module accumulates the power starting at the previously
measured amount. The following describes the usage procedure.
(a) Check that Periodic electric energy measurement flag (Yn1/Yn2) is OFF and that Periodic
electric energy reset request (Yn3/Yn4) is OFF.
(b) Set Periodic electric energy reset request (Yn3/Yn4) to ON.
The specified periodic electric energy is reset to 0 kWh, and Periodic electric energy reset
completion flag (Xn3/Xn4) will be turned ON.
(c) Check that Periodic electric energy reset completion flag (Xn3/Xn4) has become ON, and
then set Periodic electric energy reset request (Yn3/Yn4) to OFF.
Periodic electric energy reset completion flag (Xn3/Xn4) will be turned OFF.
(d) When starting measurement, set Periodic electric energy measurement flag (Yn1/Yn2) to
ON.
This module starts measuring the specified periodic electric energy, and Periodic electric
energy data completion flag (Xn1/Xn2) will be turned OFF.
(e) When stopping measurement, set Periodic electric energy measurement flag (Yn1/Yn2)
to OFF.
This module stops measuring the specified periodic electric energy, and Periodic electric
energy data completion flag (Xn1/Xn2) will be turned ON.
(f) Check that Periodic electric energy data completion flag (Xn1/Xn2) becomes ON, and
obtain the value of periodic electric energy.
Periodic electric energy 1 measurement flag (Yn1)
Periodic electric energy 1 data completion flag (Xn1)
Periodic electric energy 1 reset request (Yn3)
Periodic electric energy 1 reset completion flag (Xn3)
Figure 4.2.2-3 Example of continuous measurement of periodic electric energy
Periodic electric energy 1
Figure 4.2.2-4 Example of measurement of periodic electric energy after every reset
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