Identification Register In The Digital Module - Siemens SIMATIC NET CP 243-2 Manual

Interface to the User Program in the S7-200 CPU
2.3.1

Identification Register in the Digital Module

Meaning
The identification register signals the I/O module identifier to indicate the existence
of an 8DI/8DO digital module with the value specified below.
The address at which the program can access the identification register depends
on the slot in which the CP 243-2 is inserted.
For further information about the special bit memory and its structure for I/O
modules, refer to /4/.
Range of Values
The identification register can be read via the special bit memory of the S7-200
CPU. It provides the fixed value 05H.
Example
Assuming that the CP 243-2 is inserted directly beside the S7-200 CPU.
The content of the identification register can be read from SMB8.
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SIMATIC NET CP 243-2 AS-i Master
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