Siemens SINAMICS S120 Series Function Manual page 101

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Links and taps
The links configured in the subscriber (connections to publisher) contain the following
information:
● From which publisher is the input data received?
● What is the content of the input data?
● Where are the additional setpoints received?
Several taps are possible within a link. Several input data or input data areas, which are not
associated with one another, can be used as setpoint via a tap.
Links on the drive unit itself are possible. For example, data in a Double Motor Module can
be transferred from drive A to drive B. This internal link corresponds, as far as the timing is
concerned, to a link via PROFIBUS.
Requirements
The following preconditions should be observed for the "slave-to-slave communication"
function:
● STARTER as of Version 4.2
Note
Startdrive
Please note that you still cannot use this function with Startdrive.
● Configuration:
– Drive ES Basic, Drive ES SIMATIC or Drive ES PCS7 Version 5.3 SP3 or higher
– Alternatively, using a GSD file
● Firmware as of Version 4.3
● The maximum number of process data per drive can be identified from the value in r2050
– minus the resources that have already been used
● A maximum of 16 links to publishers
Note
The "slave-to-slave communication" function is not available for the CU310-2 PN.
Applications
For example, the following applications can be implemented using the "slave-to-slave
communication" function:
● Axis couplings (this is practical for isochronous mode)
● Specifying binector connections from another slave
Communication
Function Manual, 12/2018, 6SL3097-5BD00-0BP0
Communication via PROFIBUS DP
4.4 Slave-to-slave communication
99

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