Siemens 6RA8085-6DS22

Descriptions of functions
10.7 EtherNet/IP
SINAMICS DCM DC Converter
528 Operating Instructions, 12/2018, A5E34763375A
Example 2:
DO
Number of words to be sent
Number of words to be received
DC_CTRL (drive)
10
5
CU 0 0
TM31
1
1
Sum = length
11 words = 22 bytes
6 words = 12 bytes
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 a
ssembly 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.