Module-Internal Shared Input / Shared Output (Msi/Mso); System Redundancy S2 - Siemens SIMATIC ET 200eco PN M12-L System Manual

Configuring

5.5 Module-internal shared input / shared output (MSI/MSO)

5.5 Module-internal shared input / shared output (MSI/MSO)
Module-internal shared input / shared output (MSI/MSO)
The module-internal shared input function allows an input module to make its input data
available to several IO controllers. Each controller has read access to the same channels.
The module-internal shared output function allows an output module to be operated by
several IO controllers. One IO controller has write access. A second IO controller can have
read access to the same channels.
Detailed information
You can find additional information on the topic of Module-internal shared input / shared
output (MSI/MSO) in the STEP 7 online help and in the SIMATIC PROFINET with STEP 7
(https://support.industry.siemens.com/cs/ww/en/view/49948856) function manual.
5.6

System redundancy S2

System redundancy S2
An IO device with S2 system redundancy supports redundant ARs.
In a redundant system, an IO device with system redundancy S2 has a redundant AR for each
of the two CPUs (IO controllers). If one CPU fails, the IO device with S2 system redundancy
remains accessible to the remaining IO controller via the AR.
The I/O devices support system redundancy S2 (as of FW V1.1.0) on S7-400H CPUs (as of FW
V3.0) and on S7-1500R/H CPUs (as of FW V2.6).
Detailed information
You can find additional information on the topic of system redundancy S2 in the STEP 7
online help and in the SIMATIC PROFINET with STEP 7
(https://support.industry.siemens.com/cs/ww/en/view/49948856) function manual.
50
Distributed I/O system ET 200eco PN M12-L
System Manual, 06/2021, A5E48753295-AC