Lenze Drive Server Bus server S7 getting started Manuale Utente Scaricare il pdf (Pagina 18)

Busserv er S7

79Busserver S7 DE/EN 1.0

4.2.5 Automatic drive scanning

If the PLC is connected to the PC and the PLC program has already been transmitted to the PLC, you

can automatically scan the drives configured in the PLC program, unless they have alread y been

identified during automatic PLC scanning.

1. Select the corresponding PLC from the confi guration tree.

2. Ensure that the PLC has been at least once operated in RUN mode with the c ompleted PLC

program. Only in this case, the instance data

– i. e. also the PROFIBUS address – has been

saved in the online da ta blocks!

3. Click Scan to start scanning for drives.

– The scanning progress is indicated in a dialog box.

– The detected drives will be listed as configuration entries in the tree structure below the

selected PLC.

– The scan function automatically detects the number of the data block DB OPC which is used

to exchange data between the PC and the PLC.

Tip!

The S7 configura tion tool automatically creates several OPC items for each drive, which allow the

DriveServer to identify the drive automatically.

• For special applications, more OPC items can be added manually. In general, ho wever, the

DriveServer creates the OPC items.

If the Scan at the Server’s Start of Comm. checkbox is activated, the drives configured in the PLC

program will be detected every time the bus server is started.

• This option is useful, if the bus server is connected to a portable PC which is operated at

different systems.

• If the bus server is operated at only one system, this option should be de-activated to speed up

starting the bus server.

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Lenze Drive Server Bus server S7 getting started Manuale Utente Pagina 18