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S7-300 Automation System, Hardware and Installation: CPU 31xC and CPU 31x
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User-defined addressing means that you can assign an address of your choice to
any module (SM/FM/CP). The addresses are assigned in 67(3. Here, you
specify the module start address that forms the basis for all other addresses of the
module.
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• Optimization of the address areas available, since “address gaps” will not occur
between the modules.
• When creating standard software, you can program addresses which are
independent of the relevant S7-300 configuration.
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This section shows you how to address signal modules. You need this information
in order to be able to address the channels of the signal modules in your user
program.
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The address of an input or output of a digital module consists of a byte address
and a bit address.
Example: ,
This example consists of: input ,, byte address , and bit address
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