Siemens ET 200SP Manual page 31

Parameters
The figure below shows the structure of the parameters in data record 128.
You enable a parameter by setting the corresponding bit to "1".
Figure A-3
Digital output module RQ 4x120VDC-230VAC/5A NO ST (6ES7132-6HD01-0BB1)
Manual, 09/2017, A5E03576775-AE
A.1 Parameter assignment and structure of the parameter data record
Structure byte x to x+1 for the channels 0 to 3
Parameter data record
31