Siemens SINAMICS G110M - Acyclic Communication - Standard; Acyclic Communication - Manufacturer-Specific

8.7.6 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
KH[KH[QQKH[
– Slave -> master
0DQXIDFWXUHUV,'
3URGXFW,'KH[ KH[%%KH[
• Diagnostic request:
– Master -> slave
KH[ KH[ QQKH[
– Slave -> master no error
KH[ KH[ KH[
;
Slave -> master general error
KH[ KH[ KH[
The following repsonse is issued for all other write or read requests:
• Read requests
KH[ KH[
• Write requests
KH[ KH[
8.7.7 Acyclic communication - manufacturer-speci󹪝c
The manufacturer-speci󹪝c acyclical communication is performed via data record 47 in PIV
format. The PIV format structure is identical with that for the USS parameter channel.
AS-i System Interface Manual (https://support.industry.siemens.com/cs/gb/en/view/
1171856).
To reduce the transfer volume, there is not only the "normal" "data exchange" PIV mechanism,
but also the "Read data" and "Write data" commands.
• Data exchange:
– Control -> converter request
– Converter -> control response
• Read data:
The converter sends a read command, and the data of the last exchange request or write
request is transferred from the converter to the control.
• Write data
Write OK: -> 53 hex.
Because the PIV transfer protocol speci󹪝es the transfer direction independently, all parameters
can be transferred as data exchange request/response. Requests for reading and writing data are
included primarily to reduce the transferred data volume for the repeated reading or writing of
parameters.
Advanced commissioning
8.7 Control via AS-i
Distributed converter for SIMOGEAR geared motors
216 Operating Instructions, 10/2020, FW V4.7 SP13, A5E31298649B AL