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Redundant Profibus DP communication between S7 400H and S7315-2dp SWR via 2 CP 342-5

Created by: sina20795 at: 12/7/2014 4:11 AM (3 Replies)

12/7/2014 4:11 AM	Rate (0)
sina20795 Bronze Member Joined: 7/26/2009 Last visit: 8/28/2023 Posts: 16 Rating: (0)	HI every body. I have a project that its configuraion include an s7 300 station with software redundancy as a package and s7400H system as a DCS system. i shoud send all s7 300 station I/O data to a s7 400H system (for monitoring) via CP 342-5 module and fiber optic link through OLM Module. how can i configure s7 300 station. pleasehelp me. tahnks for advance.

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12/8/2014 3:29 AM	Rate (0)
fritz Diamond Expert Joined: 10/7/2005 Last visit: 10/1/2023 Posts: 2989 Rating: (1034)	Hello sina20795 arguably the easiest way is touse Profibus DP based communication via aY-Link and the FAQ below has all the details on how to do so (Note that the limit of this communication is 244 Bytes each way): How do you configure an S7-300 CPU or a CP342-5 as DP slave to an S7-400H as DP master using a Y-link? I hope this helps
	Cheers fritz The advice and opinion given in this thread is that of the author and does not necessarily reflect the views of I S Systems Pty Limited. To find out how I S Systems can help you with your automation needs please visit www.issystems.com.au.
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Joined: 7/26/2009

Last visit: 8/28/2023

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thanks for your replay.

I've read this post earlier. However, this solution is for a single S7300 station.

We have a S7300 software Redundant Configuration.

shuod I use two Y link for this configuration. is it practical?

12/9/2014 11:47 PM	Rate (0)
fritz Diamond Expert Joined: 10/7/2005 Last visit: 10/1/2023 Posts: 2989 Rating: (1034)	Hello sina20795 ok, I missed the fact that you have a Software Redundant System (SWR). It'll still work just as well though but again be mindfulof the 244 I/O Byte Limit of the Y-Link. If you only use one Y-LInk, each of the S7-300 SWR CPU's can only use 122 Bytes of I/O's to exchange with the S7-400H. I suggest you use one of these Bytes to send out the SWR status Byte to the400H, so that the 400H systemknows which dataset is the onefrom the current"Master"of the 300SWR system. You can of also course use one Y-Link per 300SWR CPU/CP342-5 in case you need to exchange more data(but the principe of evaluting which one is the Master 300 SWR CPU applies here too). I hope this helps
	Cheers fritz The advice and opinion given in this thread is that of the author and does not necessarily reflect the views of I S Systems Pty Limited. To find out how I S Systems can help you with your automation needs please visit www.issystems.com.au.
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