Siemens SINAMICS Series Operating Instructions Manual page 530

Descriptions of functions
10.7 EtherNet/IP
Example 2:
DO
DC_CTRL (drive)
CU
TM31
Sum = length
In contrast to PROFIBUS and PROFINET communication, only connected PZDs in the drive
can be used in the assembly.
In example 1, all ten words of the drive and the two words of the CU must have an active
BICO connection. This means that all data received from the PLC must be connected to a
parameter, which correspondingly also applies to the data sent to the PLC. All words must
therefore be supplied with status or actual values.
The assembly for Ethernet/IP is automatically made up of the sum of the interconnected
parameters r2067 for IF1 r8867 for IF2 of the respective drive object.
Corresponding to example 1, the total length for the send data would be:
DC_CTRL r2067[1] = 10 + CU r2067[1] = 2 ≥ 12 words = 24 bytes
Note
For a firmware release < 1.5, the assembly must be manually created by setting p8842 = 1
on the CU.
If the change is to be permanent, copy RAM to ROM.
The sequence of the drive objects depends on the communication settings in the drive which
can be accessed via the "communication item" of the associated drive in the project tree of
the STARTER software.
528
Number of words to be sent
10
0
1
11 words = 22 bytes
Operating Instructions, 12/2018, A5E34763375A
Number of words to be received
5
0
1
6 words = 12 bytes
SINAMICS DCM DC Converter