Siemens S7-1500 Manual page 25

Address space
Address space for configuration as 1 x 64-channel
DI 32x24VDC SNK/SRC/DQ 32x24VDC/0.3A SNK BA MSI/MSO
For configuration as a 1 x 64-channel module (module-internal Shared Input, MSI / module-
internal Shared Output, MSO), the channels for inputs or outputs are copied to multiple
submodules. Each of the channels 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 output channels
0 to 31 and read access to the input channels 0 to 31.
• The IO controllers to which submodule 2, 3 or 4 is assigned have read access to the input
channels or output channels 0 to 31.
The number of usable IO controllers depends on the interface module used. Please observe
the information in the manual for the particular interface module.
Value status (Quality Information, QI) for inputs
The meaning of the value status depends on the submodule involved.
For the 1st submodule (=basic submodule), the value status is not relevant.
For the 2nd to 4th submodule (=MSI submodule), the value status 0 indicates that the value
is incorrect or the basic submodule has not yet been configured (not ready).
Value status (Quality Information, QI) for outputs
The meaning of the value status depends on the submodule involved.
For the 1st submodule (=basic submodule), the value status 1 indicates that the output value
specified by the user program is actually output at the module terminal.
Possible causes for value status = 0: IO controller of the basic submodule is in STOP mode.
For the 2nd to 4th submodule (=MSO submodule), the value status 1 indicates that the
output value specified by the user program is actually output at the module terminal.
Possible causes for value status = 0:
• IO controller of the basic submodule is in STOP mode.
• The basic submodule is not yet configured.
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Digital input/output module DI 32x24VDC SNK/SRC/DQ 32x24VDC/0.3A SNK BA (6ES7523-1BP50-0AA0)
Equipment Manual, 07/2020, A5E48027024-AA