Cyclic Communication; Advanced Commissioning - Siemens SINAMICS G110M Operating Instructions Manual

Advanced commissioning

6.2 Inverter control
Error message
6.2.5.5

Cyclic communication

Inverter -> master
The inverter 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 default setting 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.
Master -> inverter
The master transfers the data in the "Combined Transaction Type 2" (CTT2) to the inverter
and writes it to r2050[1] and r2050[2].
To process these values in the inverter, you must appropriately interconnect r2050[1] and
r2050[2] in the inverter. This means, when the control sends the speed setpoint, you must
interconnect parameter p1070 (source for the main setpoint) with r2050 as follows:
p1070[0] = 2050[1]
Note
Internal interconnection with default setting 34
If, when commissioning, you select "Default setting 34", then the main setpoint is internally
interconnected with r2050[1].
Once a setpoint has been transferred completely, the setpoint present in the control will be
transferred as next setpoint. Any setpoint changes made during the transfer are not
considered.
160
Meaning
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 confirmed
6 Invalid subindex
7 "Selective read request" command missing
Distributed converter for SIMOGEAR geared motors
Operating Instructions, 06/2016, FW V4.7.6, A5E31298649B AG