Tree view

A PROFINET master and a PROFINET slave are displayed as follows in the tree view:

In this sample the slave was linked to the master. TwinCAT was then scanned for the master, and the master was added in TwinCAT together with the slave.

No.	Description
1	Under the PROFINET master, status messages are listed as input variables and output variables. The variables can be linked with the PLC and used for diagnostic purposes (e.g. error codes, counters, etc.).
2	PROFINET slaves are added under the master. Each PROFINET slave has its own input variables for diagnostic purposes, which indicate the state of the communication. The process data is displayed under the API (Application Process Identifier).
3	Further settings for the PROFINET master or slave can be implemented under the tabs. Other tabs are displayed, depending on whether the master or slave is selected in the tree view.

No.

Description

Under the PROFINET master, status messages are listed as input variables and output variables. The variables can be linked with the PLC and used for diagnostic purposes (e.g. error codes, counters, etc.).

PROFINET slaves are added under the master.

Each PROFINET slave has its own input variables for diagnostic purposes, which indicate the state of the communication. The process data is displayed under the API (Application Process Identifier).

Further settings for the PROFINET master or slave can be implemented under the tabs.

Other tabs are displayed, depending on whether the master or slave is selected in the tree view.

A PROFINET slave and the corresponding tabs are shown as follows in the tree view:

No.	Description
1	The process data is displayed under the API (Application Process Identifier). The DAP (Device Access Point) is always attached by default. It already has fixed properties from the GSDML file, such as process data, interface and PortSub modules.
2	Further user-defined process data are attached as additional modules under the API. Various module types such as Byte, Word, DWord or Real are available.
3	Further settings for the PROFINET slave can be implemented under the tabs. Other tabs are displayed, depending on whether slave or other entries are selected in the tree view.

No.

Description

The process data is displayed under the API (Application Process Identifier). The DAP (Device Access Point) is always attached by default. It already has fixed properties from the GSDML file, such as process data, interface and PortSub modules.

Further user-defined process data are attached as additional modules under the API. Various module types such as Byte, Word, DWord or Real are available.

Further settings for the PROFINET slave can be implemented under the tabs.

Other tabs are displayed, depending on whether slave or other entries are selected in the tree view.

When the PLC process image is read, the variables for status messages and the variables under the API (Application Process Identifier) can be linked with the variables from the PLC program. Double-click on a variable name in the tree view to open the link dialog. The link variables are identified with a small arrow icon.

Further information about TwinCAT can be found in the TwinCAT documentation on the Beckhoff website:
www.beckhoff.de