Siemens SIMATIC ET 200SP System Manual page 179

Configuration control (option handling)
10.2 Creating the control data record
Byte Element
: :
4 + ((first slot First slot ET 200AL
ET 200AL - 1) x 2)
4 + ((first slot Reserved
ET 200AL - 1) x 2)
+ 1
: :
4 + ((last slot Last slot ET 200AL
ET 200AL - 1) x 2)
4 + ((last slot Reserved
ET 200AL - 1) x 2)
+ 1
* The server module must be present in the station option and must not be marked as empty slot (BU cover).
Note
If a BU cover or no I/O module is plugged on a light-colored BaseUnit, you should enter 1 in
the additional function for the slot.
The function "Group diagnostics: Missing supply voltage L+" requires proper assignment of
the slots to a shared supply voltage L+ (potential group). All light-colored BaseUnits must be
known to the interface module. By entering 1 in the additional function, you make a light-
colored BaseUnit known to the interface module, even if an I/O module is not inserted.
Combination of configuration control and shared device (for PROFINET)
The configuration control function in a shared device is therefore only for the I/O modules of
the IO controller to which the interface module has subscribed. I/O modules that are
assigned to no controller or a different controller behave like a station without activated
configuration control.
You cannot make any change to the slot assignment for modules that are assigned to
another IO controller or are not assigned to an IO controller (shared device on module level).
The CPU assumes a one-to-one assignment for the modules.
If additional IO controllers subscribe to a module intended for configuration control (shared
device on submodule level), only one-to-one assignment is permitted for this module. It is not
possible to deselect such a module using the control data record (code 0 for this slot in the
control data record). This means the combination of "Configuration control" and "Shared
device on submodule level" is only possible to a limited extent.
Please note that all modules affected by the configuration control including all assigned
submodules are reset when you change the module assignment. Submodules that are
assigned to a second IO controller are affected as well.
178
Code
:
Slot assignment in the
station option
:
Slot assignment in the
station option
Explanation
:
Control element ET 200AL
Contains information on which ET 200AL
module is inserted in which slot.
The value that you need to enter in the
corresponding byte depends on the fol-
lowing rule:
If the module exists in the station
•
option, enter the slot number of the
module.
If the module does not exist in the
•
station option, enter 0.
Distributed I/O system
System Manual, 09/2019, A5E03576849-AJ