Siemens SINAMICS G110M - Acyclic Communication - Standard

Configure fieldbus
7.5 Communications via AS-i
SINAMICS G110M Operating Instructions
Operating Instructions, 04/2015, FW V4.7.3, A5E31298649B AD
157
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 "Defau
lt 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.
7.5.5.2
Acyclic communication - standard
This type of acyclical communication supports the ID read request and the diagnostic read
request. All other requests receive the "request not implemented" message response.
● ID request:
– Master -> slave
– Slave -> master
● Diagnostic request:
– Master -> slave
– Slave -> master no error
;
Slave -> master general error
The following repsonse is issued for all other write or read requests:
● Read requests
● Write requests