Profibus -> Slave PLC to Slave Sinamics

Hi all ,

How iis possible to control a Sinamics DP slave from Slave PLC within the same bus?

I am aware that all the transactions should go from master->slave  and vise versa but i am inclined to control a VFD (sinamics) from a slave PLC while sending the control word from Slave PLC  to master PLC and then from master PLC back to slave Sinamics . 

Thanks,

Hello,

direct from Slave PLC to SInamics is not possible.

But in the way Slave PLC <-> Master PLC <-> Sinamics schould be possible.

But you should know that then a huge amount of bus cycle time is wasted and a synchronous communication is not rally possible (Positioncontroll need this).

Regards

Christoph

Thanks christophD,

I have another question seince we are in this topic!

In TIA portal V14 SP1 i am trying to connect two PLC's one master the other slave in which i have to transfer more then 4 words from master to save and viseversa ( the case with sinamics control and someother).

Now under I-slave option i found out that i can make only one transfer and that from master  to slave in 1byte length  of data.

What are there any options that would suit my needs?

PS. in the master connection i have also some other slave devices such as sinamics g150, TP177B hmi and a PAC3200.

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New question published by Dren Bejtullahi is split to a separate thread with the subjectCan make only one transfer and that from master to slave.

Best regards
Jen_Moderator