Operation
6.10 Communication via SINAMICS Link
Converter cabinet units
Operating Instructions, 07/2016, A5E03347396A
371
Send and receive data
The SINAMICS Link telegram contains 32 indices (0...31) for the process data (PZD1...32).
Each PZD is precisely 1 word long (= 16 bits). Slots that are not required are automatically
filled with zeros. There is always a fixed assignment between the index and PZD: The index i
always corresponds to PZD i+1.
Slot
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
PZD
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
SINAMICS Link telegram content, Part 1
Slot
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
PZD
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
SINAMICS Link telegram content, Part 2
Each transfer cycle, every SINAMICS Link node can send 1 telegram with 32 PZD. Each
node receives all of the telegrams that are sent. For each transfer cycle clock, a node can
select and process up to 32 PZD from all telegrams that have been received. Single words
and double words can be sent and received. You must write double words in two
consecutive PZD.
Limitations:
●
In a telegram, a PZD may only be sent and received once. If a PZD occurs more than
once in a telegram, then Alarm A50002 or A50003 is output.
●
Reading in own transmit data is not possible; otherwise a corresponding alarm A50006 is
output.
–
A50006: It is parameterized that own data sent can be received. This is not permitted.
–
A50007: The send telegram word is larger than possible in the project.
–
A50008: The receive telegram word is larger than possible in the project.
●
The maximum number of PZD that can be received and sent also depends on the drive
object. The number of PZDs that can be evaluated corresponds to communication
according to PROFIdrive; however, for SINAMICS Link, it is limited to a maximum of 32
PZDs.
●
If, as a result of a project download, parameters of the CBE20 are change, then alarm
A08531 is output. In this case, a POWER ON is required to activate the values.
Transmission time
With SINAMICS Link, a transmission time of up to 500 µs is possible (with a max. controller
cycle of 500 µs; synchronous bus cycle of 500 µs).
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