Configuring
7.2 Configuring the CPU
Distributed I/O system
136 System Manual, 09/2019, A5E03576849-AJ
STEP 7 assigns a valid default parameter assignment for all modules. You can change the
parameter assignment subsequently.
Note
If you want to go online after the hardware detection, you have to first download the detected
configuration to the CPU; otherwise, an error may occur due to inconsistent configurations.
Properties of central modules
The properties of the CPUs have special significance for system behavior. You can set the
following for a CPU using STEP 7:
● Startup behavior
● Parameter assignment of the interface(s), for example, IP address, subnet mask
● Web server, e.g. activation, user administration, and languages
● OPC UA server
● Global Security Certificate Manager
● Cycle times, e.g. maximum cycle time
● System and clock memory
● Protection level for access protection with assigned password parameter
● Time and day settings (daylight saving/standard)
The properties that can be set and the corresponding value ranges are specified by STEP 7.
Fields that cannot be edited are grayed out.
Reference
Information about the individual settings can be found in the online help and in the manuals
of the relevant CPUs.