Measured value data records
E.2 Measured value data record for base measurements (DS 142)
Analog input module AI Energy Meter 480VAC ST (6ES7134-6PA20-0BD0)
158 Manual, 12/2015, A5E36061895-AA
Data record 142 is located on the AI Energy Meter 480VAC ST. Use SFB "RDREC" to read
out the data record from the module. Dieser Systemfunktionsbaustein ist in der STEP 7
Bibliothek hinterlegt.
Measured values in STEP 7 as of V5.5
Measured values are represented as negative values in STEP 7 as of V5.5 if the value range
of the integer format (32767 dec) is exceeded. This is not an error in the measured value.
Solution: Select hexadecimal representation.
Conversion of 64-bit floating-point numbers
If you cannot process 64-bit floating-point numbers in your automation system, we
recommend conversion to 32-bit floating-point numbers. Note the conversion can cause loss
of accuracy. For a description of the conversion of the 64-bit floating-point numbers (data
type LREAL) into 32-bit floating-point numbers (data type REAL) please refer to the Internet
(http://support.automation.siemens.com/WW/view/en/56600676).
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