Siemens Simatic S7-1500 Manual page 27

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
Digital output module DQ 8x230VAC/2A ST Triac (6ES7522-5FF00-0AB0)
Manual, 09/2016, A5E03485733-AD
B.1 Parameter assignment and structure of the parameter data records
Structure of data record 64: Bytes 0 to 3
Parameter data records
27