Diagnostics and maintenance
7.4 Replacing a module
CP 343-1 Lean
64 Equipment Manual, 01/2023, C79000−G8976−C198−09
Module replacement: Special feature of IP address assignment from a DHCP server
During configuration of the CP you can specify the IP configuration in the properties dialog;
one option is to obtain the IP address from a DHCP server.
When replacing modules, please remember that the factory
set MAC address of the new
rent from the previous module. When the factoryset MAC address of the new
module is sent to the DHCP server, this will return either a different or possibly no IP address.
Ideally, you should therefore configure IP as follows:
Always configure a client ID
if you want to obtain the same IP address from the DHCP server
after replacing the module.
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