Code
(hex)
Explanation/meaning Followed by
91 hex Write request failed: Slave → master 1 byte: Standard error code (3 hex)
Acyclic communication - manufacturer-specic
12 hex Read request: Master → slave Index, length
52 hex Read request OK: Slave → master Data
92 hex Read request failed: Slave → master Fault object
13 hex Write request: Master → slave Index, length, data
53 hex Write request OK: Slave → master
93 hex Write request failed: Slave → master Fault object
1D hex Exchange request: Master → slave Index, read length, write length, write
data
5D hex Exchange request OK: Slave → master PKE, index, n-2 data
9D hex Exchange request faulty: Slave → master Fault object
If an acyclical request cannot be executed by the converter, it replies with one of the
following error messages.
Error message Meaning
0 No fault
1 Invalid index
2 Incorrect length
3 Request not implemented
4 Busy (the request could not be processed completely within the time window, retry
later)
5 Last acyclical request was not conrmed
6 Invalid subindex
7 "Selective read request" command missing
7.7.4.1 Cyclic communication
Converter → master
The converter cyclically transfers the data from p2051[1] and p2051[2] in four bytes to the
master. You can process these four bytes in the control as for analog data. Refer to the
documentation for the AS-i master for detailed information about access to analog data.
If you selected Macro 31 or 34 during the commissioning, the two indexes are
interconnected as follows:
• p2051[1]=63: Smoothed actual speed value
• p2051[2]=27: Absolute smoothed actual current value
The values for transfer are normalized in accordance with the PROFIdrive N2 data type.
Using p2051[1] and p2051[2] you can interconnect any other or connector parameters and
transfer to the control.
Advanced commissioning
7.7Drive control via AS-i
SINAMICS G115D Wall Mounted distributed drive
Operating Instructions, 07/2023, FW V4.7 SP14, A5E52808211A AA 181
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