Siemens SIMATIC S7-1500 Manual page 31

Parameter data records
B.1 Parameter assignment and structure of the parameter data records
Assignment of data record and channel
The channel parameters of the module are included in data records 64 to 71 and are
assigned as follows:
● Data record 64 for channel 0
● Data record 65 for channel 1
● Data record 66 for channel 2
● Data record 67 for channel 3
● Data record 68 for channel 4
● Data record 69 for channel 5
● Data record 70 for channel 6
● Data record 71 for channel 7
Data record structure
The example in the following figure shows the structure of data record 64 for channel 0. The
structure of channels 1 to 7 is identical. The values in byte 0 and byte 1 are fixed and may
not be changed.
Enable a parameter by setting the corresponding bit to "1".
Figure B-1
30
Structure of data record 64: Bytes 0 to 3
DQ 8x230VAC/5A ST Digital Output Module (6ES7522-5HF00-0AB0)
Manual, 07/2014, A5E03485590-AC