Media Redundancy Protocol Topology

I have an urgent question 

I am using Redundant CPU 416-5H (6ES7416-5HS06-0AB0) for my project, I have 5 different distributed IO devices connected to the Redundant CPU (Two are ET200SP based distributed IO and three are ET200M).

I want to verify that the MRP can be done as attached, As the two free ends of network topology brought to different CPU.

If this is applicable, how it can be configured in SIMATIC Step 7 Hardware configuration ?

dchartier

Hello Ahmed;

Your configuration seems to follow the standard "Open Ring" topology for S7-400H systems using Profinet. It is not exactly MRP, which involves the use of switches as ring managers/clients) but it is approved, as you can see in this document "Configuration Examples for S7-400H with PROFINET":

https://support.industry.siemens.com/cs/ww/en/view/90885106

Hope this helps,

Daniel Chartier

 I have connected the ports interconnection in the topology editor (Snapshot is attached) which represents the "Open ring" topology, Please confirm this step is correct and no further steps are required in Hardware configuration to configure "Open ring" topology.

However I have faced an error while compiling this configuration which I will discuss in details in the next reply.

dchartier

Hello Ahmed;

Your configuration seems to follow the standard "Open Ring" topology for S7-400H systems using Profinet. It is not exactly MRP, which involves the use of switches as ring managers/clients) but it is approved, as you can see in this document "Configuration Examples for S7-400H with PROFINET":

https://support.industry.siemens.com/cs/ww/en/view/90885106

Hope this helps,

Daniel Chartier

 Before I've mentioned that I have 5 IO devices connected to my H-Station, these IO devices are as follows: 

1- ET200SP (with Interface module 6ES7155-6AU01-0CN0) & (57 DI modules 6ES7136-6BA00-0CA0)

2- ET200SP (with Interface module 6ES7155-6AU01-0CN0), (14 AO modules 6ES7135-6HD00-0BA1) & (22 DO modules 6ES7136-6DC00-0CA0)

3- three identical ET200M racks (with Interface module 6ES7153-4BA00-0XB0) & (10 AI modules 6ES7336-4GE00-0AB0) each.

After assigning IO modules in each rack, I've tried to compile the configuration and I faced the attached error which states that "Due to the specified configuration, the F-monitoring time cannot be maintained". Please advise how to overcome this issue !

Note: I've only faced this error whenever I try to add a module in ET200SP IO device, Compiling the HW configuration after assigning ET200M modules only didn't end up with the same error