Hello, when we chose telegram 999 FCOM in starter to programming sinamics G120, is the PKW eliminated and only PZD 1 to 12 bytes still working; or PKW by default still working and PZD configured with BICO 

Hello,

PZD or choosed telegram are cyclic communication. PKW is acyclic communication, which you don't need to set in drive. Acyclic communication is activated on demand in PLC programm.

For acyclic communication you can use SinaPara or SinaParaS built-in functions in TIA Portal.

Or, in Step7, you can use S7 function blocks SFB52 and SFB53. Some examples are here.

With regards

Martin

Martin472

Hello,

PZD or choosed telegram are cyclic communication. PKW is acyclic communication, which you don't need to set in drive. Acyclic communication is activated on demand in PLC programm.

For acyclic communication you can use SinaPara or SinaParaS built-in functions in TIA Portal.

Or, in Step7, you can use S7 function blocks SFB52 and SFB53. Some examples are here.

With regards

Martin

 Hello,

Thanks for the clarification,  in my application which has PKW configured in PLC programs and hardware to work with old Simovert VC and at the same time I see that in Drive-monitor of Simovert that it used a Free telegram 999 as I understand from what you said  I guess that the Master-drive Simouvert VC in my application used the two telegrams

1- PKW for parameter

2-FREE PZD for binectors and connectors 

Regards

Hello,

I have no many experiencies with Masterdrivers. If I understand correctly, Masterdrives have resevrved time for acyclic communication in every fieldbus cycle and you can define length of acyclic datas in configuration.

Sinamics drives has also reserved time for acyclic communication, also for example for communication with commisioning software, but there is no need to specify length of datas in hardware configuration. When it is not possible to complete send/receive all required datas in one communication cycle, it continue in next cycle. That's why I recomended you not use acyclic communication for control drive.

With regards

Martin