Siemens SINAMICS G110M - Cyclic and Acyclic Communication Via CTT2

RP3 RP2 RP1 RP0 AS-i.P0 = 0 -> alarm messages AS-i.P0 = 1 -> faults
1 1 1 0 not used Safety fault (F016xx)
1 1 1 1 Other alarms Other faults
1)
Only for G115D
2)
Only if F30015 was reparameterized as an alarm
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 󹪝rst byte in accordance with
the following table.
Table 8-37 CTT2 commands
Code
(hex)
Explanation/meaning Followed by
Cyclic communication
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), Chap‐
ter 4
4 bytes: PWE1, PWE2
4 bytes: PWE1, PWE2
Acyclic communication - standard
10 hex Read request: Master -> slave 2 bytes: Index, length
50 hex Read request OK: Slave -> master Index, data
90 hex Read request failed: Slave -> master 1 byte: Standard error code (3 hex)
11 hex Write request: Master -> slave Index, length, data
51 hex Write request OK: Slave -> master
91 hex Write request failed: Slave -> master 1 byte: Standard error code (3 hex)
Acyclic communication - manufacturer-speci󹪝c
12 hex Read request: Master -> slave Index, length
52 hex Read request OK: Slave -> master Data
92 hex Read request failed: Slave -> master Fault object
13 hex Write request: Master -> slave Index, length, data
53 hex Write request OK: Slave -> master
93 hex Write request failed: Slave -> master Fault object
1D hex Exchange request: Master -> slave Index, read length, write length, write
data
5D hex Exchange request OK: Slave -> master PKE, index, n-2 data
9D hex Exchange request faulty: Slave -> master Fault object
Advanced commissioning
8.7 Control via AS-i
Distributed converter for SIMOGEAR geared motors
214 Operating Instructions, 10/2020, FW V4.7 SP13, A5E31298649B AL