Siemens SIMATIC ET 200SP Manual page 25

Parameters
The figure below shows the structure of the parameters for channels 0 to 7.
You enable a parameter by setting the corresponding bit to "1".
Figure A-3
DI 8x24VDC ST digital input module (6ES7131-6BF00-0BA0)
Manual, 07/2014, A5E03574157-AC
A.1 Parameter assignment and structure of the parameter data record
Structure byte x to x+1 for the channels 0 to 7
Parameter data record
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