Siemens SIMATIC ET 200M Operating Instructions Manual page 162

Functions
8.4 Redundancy with IM 153-2
Compatible versions
If you use the ET 200M in a redundant configuration, for both IM 153-2s or IM 153-2 FOs you
must use compatible versions.
Compatible versions of the interface module IM 153-2 / IM 153-2 FO can be swapped during
"Module Change During Operation" without switching off the I/O modules.
For more information, refer to the chapter "Arrangement of the modules for the function
"Change During Operation" and / or "Redundancy" (Page 45)".
Note
The functionalities are restricted to those of the respective lower order number or the lower
version.
S7-400H as DP master
You require STEP 7 as of V5.0 as well as the software package SIMATIC S7 H-systems for
configuring the S7-400H system.
DP master 1 and DP master 2:
• work off the same user program.
• have the same configuration and parameterization for the IM 153-2 interface module.
S5-115H / -155H as DP master
If the IM 153-2 interface module is being used on an S5 H system, the you must configure
two DP master systems in the COM PROFIBUS.
Voltage supply for the IM 153-2 interface module
In order to ensure availability in redundant mode with 2 x IM 153-2, we recommend that
each IM 153-2 is using its own power supply module.
162
Operating Instructions, 04/2022, EWA-4NEB7806006-09
ET 200M