Replacing A Module; Replacing Older Modules - Siemens SIMATIC S7-300 Equipment Manual

7.4

Replacing a module

Note
Recommendation to reset address data if the use of the CP is changed
The following data is stored permanently on the CP:
• IP parameters when using DHCP
If the CP has already been operated in your plant and you want to use it at a different location
in the plant, it starts up with the permanently configured parameters.
If the CP has been used previously in your plant or has been repaired, delete all stored data by
resetting to the factory settings.
7.4.1

Replacing older modules

Distinction
When replacing existing modules with the module described here, the following variants
must be distinguished:
• Replacing a module
Describes the situation when an existing module can be replaced with a new module
simply by pulling/plugging without changing the configuration.
• Upgrading
(module replacement with compatible functions)
Describes the situation when the module described here can be used instead of an older
module as long as adaptations are made to the configuration. Here, the previously used
CP needs to be replaced in the configuration by the new CP.
Unless otherwise specified, the range of functions of the older module continues to be
supported.
You can also upgrade modules listed in "Module replacement". This is necessary when new
characteristics that were not available in the previously used module are required.
CP 343-1 Lean
Equipment Manual, 01/2023, C79000−G8976−C198−09
Diagnostics and maintenance
7.4 Replacing a module
61