Siemens simatic et200sp Manual page 57

Status information
When data record 143 is read with the RDREC instruction, Bytes 2 to 7 supply phase-
specific status information for energy counters, overflow counters and operating hours
counters.
The status information enables you can see which counters are returning their values in the
data record 143. If energy counters return their values in the status byte 1, you can
determine the type of energy counter with status byte 2.
Image 7-7
Analog input module AI Energy Meter 480VAC ST (6ES7134-6PA20-0BD0)
Manual, 12/2015, A5E36061895-AA
Status information DS 143 (read access)
7.5 Data record for energy counter (DS 143)
Energy counters
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