Siemens SINAMICS DCM Manual page 440

Example: Quick stop at telegram failure
Settings:
● CU p2047 = 20 ms
● DC_CTRL p2044 = 0 s
Sequence:
1. Following a telegram failure, and once the additional monitoring time (p2047) has
elapsed, binector output r2043.0 of drive object CU switches to "1".
Alarm A01920 and fault F01910 are output at the same time for the DC_CTRL drive
objects.
2. When F01910 is output, an OFF3 is triggered for the drive.
Note
The additional monitoring time p2047 is only useful for cyclic communication.
10.4.4 Direct data exchange
For PROFIBUS DP, the master interrogates all of the slaves one after the other in a DP
cycle. In this case, the master transfers its output data (setpoints) to the particular slave and
receives as response the input data (actual values). Fast, distributed data transfer between
drives (slaves) is possible using the "direct data exchange" function without direct
involvement from the master.
The following terms are used for the function described in this chapter:
● Direct data exchange
● Data Exchange Broadcast (DXB.req)
● Direct data exchange (is used in the following)
SINAMICS DCM DC Converter
Operating Instructions, 02.2015, A5E34763375/RS-AA/001
ac.maher.co.ir
Descriptions of functions
10.4 Communication via PROFIBUS DP
441