Siemens simatic et200sp Manual page 51

3. In Control byte 1 of the DS 143 set Bit 7 for the moment of application of the start values
of the desired energy counters:
– Bit 7 to 0, if the start value are to be applied immediately after the transfer of the data
– Bit 7 to 1, if the start value are only to be applied after the reset bit has been set in the
In Control byte 1 of the DS 143 set the reset bit (Bit 2) to 1 and Bit 0 to 1 for the overflow
counter.
Image 7-5
4. Transfer the data record with the WRREC instruction.
Analog input module AI Energy Meter 480VAC ST (6ES7134-6PA20-0BD0)
Manual, 12/2015, A5E36061895-AA
record
output data of the user data.
Energy counter control information DS 143
7.4 Resetting energy counters and overflow counters
Energy counters
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