Cyclic And Acyclic Communication Via Ctt2 - Siemens SINAMICS G110M Operating Instructions Manual

Advanced commissioning
8.7 Control via AS-i
RP3 RP2 RP1 RP0 AS-i.P0 = 0 -> alarm messages
1
1
Only for G115D
1)
Only if F30015 was reparameterized as an alarm
2)
8.7.4

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.
Table 8-37
Code
(hex)
Cyclic communication
Access to analog values via DS140 ... DS147. See CP 343−2 / CP
343−2 P AS−Interface master
support.industry.siemens.com/cs/gb/en/view/1171856), Chap‐
ter 4
Acyclic communication - standard
10 hex
50 hex
90 hex
11 hex
51 hex
91 hex
Acyclic communication - manufacturer-specific
12 hex
52 hex
92 hex
13 hex
53 hex
93 hex
1D hex
5D hex
9D hex
214
1 1 0 not used
1 1 1 Other alarms
CTT2 commands
Explanation/meaning
(https://
Read request: Master -> slave
Read request OK: Slave -> master
Read request failed: Slave -> master
Write request: Master -> slave
Write request OK: Slave -> master
Write request failed: Slave -> master
Read request: Master -> slave
Read request OK: Slave -> master
Read request failed: Slave -> master
Write request: Master -> slave
Write request OK: Slave -> master
Write request failed: Slave -> master
Exchange request: Master -> slave
Exchange request OK: Slave -> master
Exchange request faulty: Slave -> master
AS-i.P0 = 1 -> faults
Safety fault (F016xx)
Other faults
Followed by
4 bytes: PWE1, PWE2
4 bytes: PWE1, PWE2
2 bytes: Index, length
Index, data
1 byte: Standard error code (3 hex)
Index, length, data
1 byte: Standard error code (3 hex)
Index, length
Data
Fault object
Index, length, data
Fault object
Index, read length, write length, write
data
PKE, index, n-2 data
Fault object
Distributed converter for SIMOGEAR geared motors
Operating Instructions, 10/2020, FW V4.7 SP13, A5E31298649B AL