Configure fieldbus
7.5 Communications via AS-i
SINAMICS G110M Operating Instructions
Operating Instructions, 04/2015, FW V4.7.3, A5E31298649B AD
155
Table 7- 12 Alarm and fault messages via RP0 … RP3 from the inverter to the AS-i master
AS-i.P0 = 0 -> alarm messages
0 0 0 1 not used Overtemperature, F00004, F00006
0 1 0 0 Overtemperature (A07400,
I
2
t overload (F30005, F07936)
0 1 0 1 Overvoltage (A07400, A07404,
A30502)
Equipment malfunction (F30009,
F01000, F01001, F01002, F01005,
F01015, F01018, F01029, F01000-
0 1 1 1 Undervoltage (A30041, A07402,
Motor-PTC sensor malfunction
2
Overvoltage (F30002, F30011)
1 0 1 1 not used Undervoltage (F00003, F30040,
1 1 0 0 not used Short-circuit at the output (F30001,
F30017, F30021, F07801, F07808,
Motor phase loss (F30015, F07902)
1 1 1 1 Other alarms Other faults
Cyclic and acyclic communications via CTT2
Via CTT2 (Combined Transaction Type 2), both cyclical and acyclical communication is
performed via AS-i. Because only one channel is available (AS-i.DO1 master -> slave or AS-
i.DI3 slave -> master), a concurrent cyclical and acyclical data exchange is not possible.
The communication type (cyclical or acyclical) is always coded in the first byte in accordance
with the following table.
Table 7- 13 CTT2 commands
Access to analog values via DS140 … DS147. See
CP 343−2
/ CP 343−2 P AS−Interface master
(https://support.industry.siemens.com/cs/gb/en/view/1171856)
4 bytes: PWE1, PWE2