Siemens SIMATIC S7-1500 Manual page 17

Parameters/address space
4.2 Address space
Address space for configuration as 8-channel DQ 8x230VAC/5A ST
The following figure shows the assignment of the address space for the configuration as a 8-
channel module with value status. You can freely assign the start address for the module.
The addresses of the channels are derived from the start address.
The letters "a to d" are printed onto the module. "For example, AB a" stands for module start
address output byte a.
Figure 4-1
Address space for configuration as 1 x 8-channel DQ 8x230VAC/5A ST MSO
For the configuration as a 1 x 8-channel module (module-internal Shared Output, MSO),
channels 0 to 7 of the module are copied to multiple submodules. Channels 0 to 7 are then
available with identical values in various submodules. These submodules can be assigned to
up to four IO controllers when the module is used in a shared device:
● The IO controller to which submodule 1 is assigned has write access to outputs 0 to 7.
● The IO controllers to which submodule 2, 3, or 4 is assigned have read access to outputs
0 to 7.
The number of usable submodules is dependent on the interface module used. Observe the
information in the manual for the particular interface module.
Value status (Quality Information, QI)
The meaning of the value status depends on the submodule on which it occurs.
For the first submodule (=basic submodule), the value status 0 indicates that the value is
incorrect or that the IO controller of the basic submodule is in STOP state.
For the 2nd to 4th submodule (=MSO submodule), the value status 0 indicates that the value
is incorrect or one of the following errors has occurred:
● The basic submodule is not yet configured (not ready).
● The connection between the IO controller and the basic submodule has been interrupted.
● The IO controller of the basic submodule is in STOP or POWER OFF state.
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Address space for configuration as 8-channel DQ 8x230VAC/5A ST with value status
DQ 8x230VAC/5A ST Digital Output Module (6ES7522-5HF00-0AB0)
Manual, 07/2014, A5E03485590-AC