Operation
7.5 Communication via PROFIBUS DP
SINAMICS DCP
Operating Instructions, 09/2019, A5E34382853K
229
7.5.3.6 Monitoring telegram failure
When monitoring telegram failure, SINAMICS differentiates between two cases:
● Telegram failure with a bus fault
After a telegram failure, and the additional monitoring time has elapsed (p2047), bit
r2043.0 is set to "1" and alarm A01920 is output. Binector output r2043.0 can be used for
shutdown, for example.
Once the delay time p2044 has elapsed, fault F01910 is output. Fault F01910 initiates
fault response OFF3 (shutdown) at the DO DCP_CTRL. If no OFF response is to be
initiated, then the fault response can be reparameterized accordingly.
Fault F01910 can be acknowledged immediately. The drive can then be operated even
without PROFIdrive.
Figure 7-21 Monitoring telegram failure with a bus fault
● Telegram failure with a CPU stop
After telegram failure, bit r2043.0 is set to "1". Binector output r2043.0 can be used for
shutdown, for example.
Once the delay time p2044 has elapsed, fault F01910 is output. Fault F01910 initiates
fault response OFF3 (shutdown) at the DO DCP_CTRL. If no OFF response is to be
initiated, then the fault response can be reparameterized accordingly.
Fault F01910 can be acknowledged immediately. The drive can then be operated even
without PROFIdrive.
Figure 7-22 Monitoring telegram failure for a CPU stop
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