Setting up automatic bus parameter detection
If you select an interface with automatic detection of the bus parameters (for example CP 5611 (Auto)), you can connect the programming device or PC to MPI or PROFIBUS without needing to set bus parameters. At a transmission speed lower than 187.5 Kbps, you may, however, have waiting times of up to one minute.
Requirement
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Masters that distribute bus parameters cyclically are connected to the bus.
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In PROFIBUS networks, the cyclic distribution of bus parameters is enabled.
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The interface is not assigned to a subnet. If you assign a subnet in the properties of the interface, the settings for the subnet in the project take precedence. In this case, the settings for the automatic interface configuration cannot be changed.
Procedure
To enable automatic bus parameter detection, follow these steps:
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Select the interface in the project tree.
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Select the "Properties" command in the shortcut menu of the interface.
The dialog for configuring the interface opens.
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Go to "General > Configurations > Active configuration" and select the setting "Automatic protocol detection".
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Go to "Configurations > Auto configuration > Local settings" and select the address of the PG/PC interface in the "Own address" drop-down list.
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If you then want to display the current bus settings, click the "Network detection" button.