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Sinec L2 DP with Profibus DP:: URGENT

Created by: Patrikk at: 2/9/2010 8:11 PM (16 Replies)

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2/9/2010 8:11 PM	Rate (0)
Patrikk Posts: 131 Rating: (1)	Dear all, i have an old system: S5 PLC and im308B that communicates to Simadyn D 6dd1660-0aj1 under he Sinec L2 DP protocol and i have another new independent system: S7-416 DP with some modules and drives under Profibus DP. Do u think i can make those 2 systems exchange data between each others normally? i dont want to do anything on the old system because it has an old configuration (.200 files on COM ET200). Or it is impossible? appreciate ur help on this issue.thanks.
Patrikk Posts: 131 Rating: (1)
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2/10/2010 5:00 PM	Rate (0)
J_Bell Posts: 5822 Rating: (412)	Dear Patrikk, I admit I have my doubts about a possible way in here. As you already mention the IM 308 B works with COM ET 200 and .200 files. The CPU S7-400 works with GSD files and DP V1. This may be nearly impossible... in my mind. Even the use of a DP-DP-Coupler will not work because this Coupler works with GSD Files... which will not work with the COM ET 200. The only solution I would see is to add Hardware to the S5 which supports the communication with the S7. Examples for such hardware would be: CP 5431 IM 308 C CP 1430 CP 1430 TCP or even serial interfaces... if available. At the S7 side you would need comparable interfaces too. These would be recommended by your local SIEMENS sales representative. I am sorry for not being able to help you more than this. Best regards J_Bell
J_Bell Posts: 5822 Rating: (412)
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2/10/2010 5:51 PM	Rate (0)
Patrikk Posts: 131 Rating: (1)	it's ok mr. J_Bell don't worry. So if i use an im308c and i put in the S5 Rack then i will be able to communicate with the S7-400 ? my S5 has a Sinec L2 DP network: doesn't that make a conflict with the S7-400 Profibus DP network ? also, you mean that if Iconfigure again my Sinec L2 DP network with the new added IM-308c on Com Profibus and also i define my network in Step 7 netpro for connecting an S5 station, does this work normally ?
Patrikk Posts: 131 Rating: (1)
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2/11/2010 12:43 AM	Rate (0)
fritz Diamond Expert Joined: 10/7/2005 Last visit: 1/23/2025 Posts: 3032 Rating: (1059)	Hello Patrick one quick thing before we get to your question: You could actually use a DP/DP Coupler between the IM308B and your S7. The DP/DP coupler is one of the very few "real" Profibus DP Slave devices for whicha COM ET200 configuration is possible (a list of IM308B configurable Devices can be found HERE). Plese note the following though: Your IM308B must be at least rev 6 (check which number has a"X" on the front of the card). You will have to use COM ET200 and change the existing config, reburn the EPROMof the IM308B and add some code to your S5 program (simple read/writes to the configured I/O's). I have not done this specific setup myselfand note the part number in the list is for the superseeded DP/DP coupler (6ES7 158-0AD00-0XA0, its successor is 6ES7 158-0AD01-0XA0and is however fully compatible, as well as having the same DP Slave ID number, so it should work just as well with the IM308B's typefile based config). As for your questions: Patrikk So if i use an im308C and i put in the S5 Rack then i will be able to communicate with the S7-400 ? YES you will (there'll be obvisouly some configuration & coding effort involved in the S5 as well as in the S7)and here are a couple of examples: Simatic Net Quickstart How do you operate an S7-300/400 as a DP slave on the PROFIBUS DP when the DP master is an S5 (with IM 308-C)? Patrikk My S5 has a Sinec L2 DP network: doesn't that make a conflict with the S7-400 Profibus DP network ? No it won't, providingthat you create a completely new physical Profibus link between the S5 and S7 and do NOT touch the existing IM308B basedone. Patrikk also, you mean that if Iconfigure again my Sinec L2 DP network with the new added IM-308c on Com Profibus and also i define my network in Step 7 netpro for connecting an S5 station, does this work normally ? You could potentially migrate all devices that exist on the current IM308B based Sinec L2 network over to the new IM308C based one. However, some older Siemens devices (e.g. CS51 card for 6RA24 drive) can only be used on an IM308B but NOT on an IM308C (a GSD file does NOT exist for them), so you will need to check that first. You mayalso have slightlychange the S5 code for some devices as the High/Low Byte may now be in reverse order. If you can (i.e. you have a spare slot in yourS5 CR), I would "simply" add a newIM308C to it and NOT touchthe IM308B. There is unfortunately no magic silver bullet available (at least none that I can think of), but I would in your case personally opt for the IM308C solution (presumingthe amount of data that you need to exhange is on the smaller side). 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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2/11/2010 1:12 PM	Rate (0)
Patrikk Posts: 131 Rating: (1)	Thank you Mr. Fritz. I really appreciate ur support. I will go for the solution of the DP/DP coupler as it requires no extra programming and also i cant migrate my CS61 simadyn D. But i saw that the DP/DP coupler couples 2 profibus DP networks: what i need is to couple my Sinec L2 DP to the Profibus DP, doesn't make that problems? Thank you.
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2/11/2010 1:52 PM	Rate (0)
J_Bell Posts: 5822 Rating: (412)	Hello, Fritz is absolutely right. I did not know about this list with compatible Hardware for the IM 308 B. I also checked the DP/DP Coupler mentioned, well it is discontinued but the new Hardware seems to becompletely compatible toits predecessor. About the networking you have two choices: 1. You network all together, I would not recommend this solution. If you use this you may connect the already running SINEC L2 DP Bus (PROFIBUS) together with the DP/DP Coupler, both interfaces (each interface a single Address) and the S7. This way you have to validate the Bus setup and all parameters. The performance of the whole system may drop... but this would have to be investigated first. 2. You separate the SINEC L2 DP network form the other PROFIBUS DP used by the S7. To do this the DP/DP Coupler uses 2 PROFIBUS DP Slave interfaces. You connect one of these interfaces to each of the networks. In this case you do not have to careabout the same PROFIBUS Addresses, you just have to care that the Address is unique at each network. Personally I would use the Solution 2. Best regards J_Bell
J_Bell Posts: 5822 Rating: (412)	Last edited by: J_Bell at: 2/11/2010 1:52 PM
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2/11/2010 2:19 PM	Rate (0)
Patrikk Posts: 131 Rating: (1)	Dear Mr. J-Bell, my 2 networks are already separated. I will change my configuration in COM ET200 and put the DP/DP coupler as a slave for im308B. but then, if i choose the second solution, do i need extra programming to exchange the data between those 2 networks or no ? Thanks in advance.
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2/11/2010 5:25 PM	Rate (0)
J_Bell Posts: 5822 Rating: (412)	Hello, well, the only program you have to change is to send the data you want to transfer to the outputs of the DP/DP Coupler. On the other side you will have to collect this data as inputs to the PLC... and vice versa. That’s it. Best regards J_Bell
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2/13/2010 11:29 AM	Rate (0)
Patrikk Posts: 131 Rating: (1)	Mr. Jbell, if we used the solution of DP/DP coupler and configured it as slave for im308B. therefore, tose the other system of s7-400 on the other side of the DP/DP will be also a slave for the im308B ? because i need it to become a slave.thank you in advance.
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2/13/2010 1:27 PM	Rate (0)
fritz Diamond Expert Joined: 10/7/2005 Last visit: 1/23/2025 Posts: 3032 Rating: (1059)	Hello again Patrikk each port of the DP/DP Coupler is a DP Slave, so you must set your S7 to be a DP Master (your IM308B is already a Master). The only reason DP/DP couplers exists is indeed to allow simple Profibus DP I/O related data exchange between two DP Masters. Below is a link to the manual as well as an FAQ which containmore useful info on this subject (and you'll find plenty more if you do a search for "DP/DP coupler" in https://support.automation.siemens.com): DP/DP Coupler manual What are the special features of input/output addressing with the DP/DP coupler? 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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