Dears

I am using the TIA selection tool for my selection of this solution.

I am trying to install 2 315-2DP CPUs on the same rail as a solution with 2 software redundant CPUs + multiple IM racks under the main CPU rack but after I install the first cpu on the rack I cannot install the second cpu next to the first one on the same rack, am I missing something here?

attached screenshot.

 Hello Hoseini

Thank you so much, so that means that both cpus will have to have their own rails in the TIA selection tool? and are there any bus connectors required for each cpu? and how can we save space in the panel by having both CPUs on the same rail or rack?

hdhosseini

Hello ,

I hope I can help you by your application.Normally a SWR application is consisting of 2 CPU in different racks with a communication interface for redundancy data and a DP interface for process data communication with DP slaves.Please, try again by putting CPUs in different racks and assembling the rest of modules.Read more in the following manual:

SIMATIC S7-300/S7-400 Software redundancy for SIMATIC S7

I hope it helps,

hdhosseini

Thank you very much for your detailed answer.

About the bus connectors that I was asking about it was regarding those small connectors that are inserted behind the CPU, IM, CP or I/O card, I should use a bus connector for both CPUs (one each?) 

And regarding redundant I/Os, would it work with IM 153-2 with software redundant S7-300 CPUs or are there anything different here?

hdhosseini

so that means that both cpus will have to have their own rails in the TIA selection tool?

Yes , In your engineering software (STEP 7 or TIA Portal) , you need to use different racks.

and are there any bus connectors required for each cpu?

Yes , Keep the MPI connector for PG operation , Profibus connector for Master-->DP Slaves communications and if you use ethernet for communication between master and standby CPU , you need an extra ethernet connection.

and how can we save space in the panel by having both CPUs on the same rail or rack?

You can use the mounting rails with the dimension that suits your application.You can save space by using only essential modules on the main rack (PS,CPU,CP).Check width of each module and select the mounting rail you need from :

SIMATIC S7-300 S7-300 Module data

"if you use ethernet for communication between master and standby CPU , you need an extra ethernet connection."

Can I use ethernet/profinet for software redundancy? the integrated port on an extra CP?

Dear AUTOMOTO21,

Bellow you can find few tips, which might be helpful, still you have to double check.

1. Software Redundancy or SWR cannot by used with TIA Portal only in Step 7, 

2. SWR also consists of a software package which is only available on 32 bit, check 6ES7862-0AC01-0YA0

3. I believe you need to use ET200M redundancy bundle kit, check 6ES7153-2AR03-0XA0.

Once again, I'm not 100% sure that the above information is correct. 

Mircea.

 so, can software redundancy be done in any way on ethernet/profinet? or MPI is the only option?

hdhosseini

Can I use ethernet/profinet for software redundancy? the integrated port on an extra CP?


I don't think SWR works for cases related to integral PROFINET ports . You can the available supported CPs here:

CP 343-1	6GK7343-1BA00-0XE0 6GK7343-1EX11-0XE0 6GK7343-1EX30-0XE0 6GK7343-1GX30-0XE0
CP 343-1 LEAN (connection to Industrial Ethernet)	6GK7343-1CX10-0XE0
CP 443-5 EXT (connection to PROFIBUS network)	6GK7443-5DX04-0XE0 6GK7443-5DX05-0XE0
CP 443-1 ISO1 (connection to Industrial Ethernet)	6GK7443-1EXxx-0XE0 6GK7443-1GXxx-0XE0 6GK7443-1BXxx-0XE0