Siemens SINAMICS DCM Manual page 592

Bus connection
Up to 31 drives receive the same setpoints from a drive. The drive that sends the setpoints
must be selected by setting "Enable send" to 1. For all other drives, "Enable send" must be
set to 0.
1) The shields for the interface cables must be connected directly on the devices (using a clamp, for example) to de-
vice or cabinet ground, with a low level of impedance.
2) Twisted cable, e.g. LIYCY 2×0.5 mm
that the difference in ground potentials between the link partners remains below 7 V.
Figure 10-91 "Bus connection" peer connection type
SINAMICS DCM DC Converter
Operating Instructions, 02.2015, A5E34763375/RS-AA/001
10.29 Serial interface with peer-to-peer protocol
; with longer cables, an equipotential bonding cable should be used to ensure
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Descriptions of functions
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