Siemens Simatic ET 200SP Manual page 69

Energy counters
7.5 What is the structure of the control and feedback interface for DS 143?
Control information
When data record 143 is written with the WRREC instruction, Bytes 2 to 7 are used as
phase-specific control information for energy meters, overflow counters and operating hours
counters. The length of the control information amounts to 2 bytes for each phase:
● In control byte 1 you determine which counter you want to preset and the time at which
counters are to be preset.
Figure 7-12
● In control byte 2 you determine which energy meter categories you want to preset.
Figure 7-13
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Control information DS 143, control byte 1 (write access)
Control information DS 143, control byte 2 (write access)
Analog input module AI Energy Meter 480VAC/CT HF (6ES7134-6PA00-0CU0)
Manual, 07/2018, A5E42674880-AA