Siemens SIMATIC ET 200SP Manual page 35

Parameter data record
A.2 Parameter assignment and structure of parameter data record
Structure of data record 128 and data records 0 to 7
Figure A-1
Header information
The figure below shows the structure of the header information.
Figure A-2
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Structure of data record 128 and data records 0 to 7
DR 128 or DR 0 to 7: Bytes 0 and 1; header information
DI 8xNAMUR HF digital input module (6ES7131-6TF00-0CA0)
Manual, 02/2014, A5E03894478-01