Siemens Simatic 6ES7 157-0AD81-0 A0 Series - Update Directly Via PROFIBUS-DP; Update Via MPI to the CPU and then Via PROFIBUS-DP

Operation of the DP/PA Link and the Y Link
8-14
DP/PA Link and Y Link Bus Couplings
A5E00193841-011
Example of a configuration
Update directly via PROFIBUS-DP
The programming device/PC with the update files is connected directly to the
PROFIBUS interface of the IM 157 (see Figure 8-3).
Programming device/PC
DP/PA link
IM 157
Figure 8-3 Update directly via PROFIBUS-DP (programming device/PC is connected
directly to the IM 157)
Update via MPI to CPU and then via PROFIBUS-DP
The programming device/PC with the update files is connected to the MPI interface
of the CPU. The IM 157 is connected to the second interface of the CPU via
PROFIBUS-DP (see Figure 8-4). The IM 157 must be integrated in the STEP 7
project on the CPU.
Programming device/PC
DP/PA link
IM 157
e. g. CPU 315-2 DP
Figure 8-4 Update via MPI to the CPU and then via PROFIBUS-DP (programming
device/PC is connected to the CPU)