Siemens Simatic S7-1500 Manual page 17

The following figure shows the assignment of the address space for submodules 1, 2, 3, and
4 and the value status.
Figure 4-2
Reference
You can find information on the Shared Input/Output (MSI/MSO) function in the section
Module-Internal Shared Input/Output (MSI/MSO) of the PROFINET with STEP 7 V13
(https://support.industry.siemens.com/cs/ww/en/view/49948856) function manual.
Digital output module DQ 8x230VAC/2A ST Triac (6ES7522-5FF00-0AB0)
Manual, 09/2016, A5E03485733-AD
Address space for configuration as 1 x 8-channel DQ 8x230VAC/2A ST S MSO with
value status
Parameters/address space
4.2 Address space
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