Siemens SIMATIC Manual page 30

Parameter data record
A.1 Parameter assignment and structure of parameter data record
Parameters
The figure below shows the structure of the parameters for channels 0 to 7.
Enable a parameter by setting the corresponding bit to "1".
Figure A-3
30
Structure byte x to x+1 for the channels 0 to 7
Digital output module DI 8x24VDC SRC BA (6ES7131-6BF61-0AA0)
Manual, 09/2017, A5E32855511-AC