Try that

4.4 Slave-to-slave traffic

New function

With "Slave-slave communication" – also known as "Data Exchange Broadcast" –

fast data exchange is possible between the converters (slaves) without the master

being directly involved; for instance, to enter the actual value of one converter as

setpoint for the other converter (more detailed information is provided in the

Operating Instructions (Chapter 6.1.4.4) Link

(LINK: https://support.industry.siemens.com/cs/ww/en/view/50815575 )