CPU 115u with VLT Danfoss Profibus DP

Hi,

I need comunicate a CPU 115u (IM 308C) with a VLT Danfoss using Profibus DP.

In hardware configuration I have selected PPO type 1, but I don't know how can I read (and write) the data of VLT in a DB in Step5.
I need special FB?

Thank you for your help.

Regards

JG

When you want to do it over the I/O then the next possibility is there:

If analog or consistent data is transferred only at irregular intervals to the slaves or not at all, then there is definitely something wrong with the access sequence of the CPU to the data of the slaves.

This behavior should not occur if words are configured and access is made using word commands. In the case of long consistent areas, you must always observe the instructions given in the device manual "Distributed I/O System ET200", Appendix B7. This manual is available in Entry IDhttp://support.automation.siemens.com/WW/view/en/1142470

Here, the sequence in which access is to be made is defined. The sequence depends on the type of CPU and the area in which the data is stored. The byte that is marked here with a dark bar must always be read or written last.