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DP/PA Link vs. DP/PA Coupler

Created by: Nahuel at: 5/23/2007 9:54 PM (5 Replies)

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5/23/2007 9:54 PM	Rate (0)
Nahuel Posts: 2 Rating: (0)	Hello all I have a simple question: what are the differences between a DP/PA Link 6ES157-0AA82 and a DP/PA coupler 6ES157-0AC82? I have an aplication where I only need to connect a single PA instrument to an existent DP network - there's an S7-300 controller on that network as a master. Wich one is the one I have to choos? Why? Might like to read some pro's and con's in case both of them could do the job. Thanks in advance Kind regards Nahuel
Nahuel Posts: 2 Rating: (0)
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5/23/2007 11:51 PM	Rate (1)
Late Platinum Expert Joined: 1/7/2006 Last visit: 2/16/2023 Posts: 2705 Rating: (311)	Nahuel I have a simple question: what are the differences between a DP/PA Link 6ES157-0AA82 and a DP/PA coupler 6ES157-0AC82? I have an aplication where I only need to connect a single PA instrument to an existent DP network - there's an S7-300 controller on that network as a master. Wich one is the one I have to choos? Why? Might like to read some pro's and con's in case both of them could do the job. Dear Nahue, The coupler might be used directly on the Profibus, but you have to switch the baudrare down to 45 kBit/s. When there are no other slaves on the Profibus that is no problem to do. When you have other slaves on the Profibus you don't want to switch back in baudrate and you could use a DP/PA-Link... After a link you could use more couplers, see the documantation for more information.
	I hope that the answer will help, if you have still questions, don't hesitate to ask me. All the best, Late Never say never, think in solutions, not in trouble......
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5/24/2007 3:30 PM	Rate (0)
Nahuel Posts: 2 Rating: (0)	Thanks a lot, Late! So I'm going COUPLER! All documentation on SIEMENS website references to code 6ES7 153, but what I've got is 6ES7 157 - is it a "new" version? That's for both Link and Coupler. Do I need any other accesory? Front connector??? Thanks in advance, once again Nahuel
Nahuel Posts: 2 Rating: (0)
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5/25/2007 12:35 AM	Rate (0)
Late Platinum Expert Joined: 1/7/2006 Last visit: 2/16/2023 Posts: 2705 Rating: (311)	Nahuel So I'm going COUPLER! All documentation on SIEMENS website references to code 6ES7 153, but what I've got is 6ES7 157 - is it a "new" version? That's for both Link and Coupler. Do I need any other accesory? Front connector??? Dear Nahuel, The IM 153-2BA01 is used as Link for PA, Y-Link for the H-System and as IM 153-2 for ET 200M, so there are less components. But it is defenetely NO coupler... You need cable for Profibus DP and cable for Profibus PA, a connector for Profibus DP, a powersupply and the wiring for the 24V, a backplainand that's it. Please check or you can feed with the coupler the equipment that you want to place behind the coupler...
	I hope that the answer will help, if you have still questions, don't hesitate to ask me. All the best, Late Never say never, think in solutions, not in trouble......
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6/23/2014 12:41 PM	Rate (0)
Narrator1 Bronze Member Joined: 3/25/2013 Last visit: 3/21/2019 Posts: 177 Rating: (1)	New question split intoSitrans LU250 - monitor tank levels. With best regards, Narrator1

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6/23/2015 9:36 AM	Rate (0)
Min_Moderator Platinum Member Joined: 9/3/2014 Last visit: 3/13/2019 Posts: 4812 Rating: (123)	New question published by jhing is split to a separate thread with the subject DP/PA coupler FDC 157-0, no values on Scada. Best regards Min_Moderator

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