Energy counters
7.2 Preset and apply start values for energy and overflow counters
Analog input module AI Energy Meter 480VAC/CT HF (6ES7134-6PA00-0CU0)
60 Manual, 07/2018, A5E42674880-AA
Apply start values from data record DS 143 with DQ bit
Due to the differing lengths of the output data, setting of the start values for the energy
counters and overflow counters depends on the configured module version.
Module versions with 20 bytes of output data
If you use module versions with 20 bytes of output data, you can:
● Apply start values for energy counters and overflow counters for
phases separately by
active, reactive and apparent energy.
● Apply start values for energy counters and overflow counters for each
phase
separately by active, reactive and apparent energy.
Module version with 2 bytes of output data
If you use the module version with 2 bytes of output data, then you always apply the start
values for
the energy counters and overflow counters simultaneously.
● In your STEP 7 project you have created a PLC data type that has an identical structure
to data record DS 143 and have entered the start values.
Applying depends on the category selection from control byte 2.
– Set Bit 0 if you want to apply the start values for the overflow counters.
– Set Bit 2 if you want to apply the start values for the energy meters.
● In control byte 1 of the DS 143 you have set Bit 7 to "1" (apply start values via DQ bit)
● You have transferred the data record DS 143 with new start values to the CPU. The
assignment of the data record can be found in Structure for energy counters (DS 143)
(Page 232)
Note
Pre-set start values for counters
If you have not yet transferred any start values to the CPU using the data record DS 143,
then start the counters with the value 0.
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