Cyclic And Acyclic Communication Via Ctt2 - Siemens SINAMICS G115D Operating Instructions Manual
Distributed drive for conveyor applications
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Advanced commissioning
7.7 Drive control via AS-i
RP3 RP2 RP1 RP0 AS-i.P0 = 0 → alarm messages
0
0
0
0
1
1
1
1
1
1
1
1
* A30015 will be generated after the message type of F30015 is changed to "Alarm". For more information
on changing the message type, see p2118 and p2119 in the List Manual.
7.7.4
Cyclic and acyclic communication 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.
CTT2 commands
Code
(hex)
Cyclic communication
Access to analog values via DS140 ... DS147. See CP 343−2 / CP
343−2 P AS−Interface master, Chapter 4
support.industry.siemens.com/cs/ww/en/view/5581657)
Acyclic communication - standard
10 hex
50 hex
90 hex
11 hex
51 hex
180
1
0
0
Overtemperature (A05000,
A05004, A05006, A07012,
A07015)
1
0
1
Overvoltage (A30502, A07400)
1
1
0
Local/Remote keyswitch in "Off"
(A03560)
1
1
1
Undervoltage (A30016, A07402)
0
0
0
I
t overload (A07805)
2
0
0
1
Not used
0
1
0
Local mode active (A03561)
0
1
1
Not used
1
0
0
Not used
1
0
1
Motor phase loss (A30015 *)
1
1
0
Not used
1
1
1
Other alarms
Explanation/meaning
CP 343−2 / CP 343−2 P AS−Interface master
Read request: Master → slave
Read request OK: Slave → master
Read request failed: Slave → master
Write request: Master → slave
Write request OK: Slave → master
AS-i.P0 = 1 → faults
I
2
t overload (F30005, F07936)
Equipment malfunction (F01000 to
F01257)
Not used
Motor PTC sensor malfunction (F07011,
F07016)
Overvoltage (F30002, F30011)
Not used
Not used
Undervoltage (F30003, F07802)
Short-circuit at the output (F30001,
F30017, F30021, F07801, F07807,
F07900)
Motor phase loss (F30015, F07902)
Safety fault (F016xx)
Other faults
Followed by
4 bytes: PWE1, PWE2
4 bytes: PWE1, PWE2
(https://
2 bytes: Index, length
Index, data
1 byte: Standard error code (3 hex)
Index, length, data
SINAMICS G115D Wall Mounted distributed drive
Operating Instructions, 07/2023, FW V4.7 SP14, A5E52808211A AA
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