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Sinec L1 / Industrial Ethernet

Created by: Andy Parry at: 1/13/2010 4:03 PM (4 Replies)

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1/13/2010 4:03 PM	Rate (0)
Andy Parry Member Joined: 9/4/2009 Last visit: 9/16/2021 Posts: 2 Rating: (0)	Hi, We are looking at upgrading an existing network of S5 PLCs to S7 300 PLCs. IT is a very extensive network, using sinec L1 communications.If we wanted to keep the Sinec L1 physical network but upgrade our PLCs and CPs to S7-300 are there any issues with ISO-TCP communications over the existing Sinec L1 network? best regards

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1/14/2010 8:16 AM	Rate (0)
little holmes Experienced Member Joined: 12/9/2009 Last visit: 4/18/2024 Posts: 156 Rating: (11)	Hello, The S7-300 with IE CPs supports for example the following protocols via Industrial Ethernet for communication: - TCP - ISO-on-TCP - ISO transport You can use SEND/RECEIVE services with this protocols.The FETCH/WRITE services are only supportedas serves by the S7. Best Regards Little Holmes

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1/14/2010 10:37 AM	Rate (0)
Andy Parry Member Joined: 9/4/2009 Last visit: 9/16/2021 Posts: 2 Rating: (0)	Hello, Thanks for that info, it was pretty much as I understood from the manuals etc. best regards Andy

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1/14/2010 12:22 PM	Rate (0)
fritz Diamond Expert Joined: 10/7/2005 Last visit: 1/20/2025 Posts: 3031 Rating: (1058)	Andy Parry If we wanted to keep the Sinec L1 physical network but upgrade our PLCs and CPs to S7-300 are there any issues with ISO-TCP communications over the existing Sinec L1 network? Hello Andy Parry I don't mean to spoil the party, but I would advise you to put in new Ethernet cable instead of using the old Sinec L1 cable. As far as I'm concerned, theonly thing that SINEC L1 cable has in common with CAT5 Ethernet cable is the number of cores (4), but that's as far as it goes (I highly doubt that the cable characteristics of SINEC L1 cable will make it a suitable choice for Ethernet usage). Note further that SINEC L1 cable runs between 2 Bus terminals could be a few kilometers long (baudrate was 9600 bps) whereas CAT5 (on CAT5 rated cable) is max 100 meters (which could become another party spoiler) and trying to get an RJ45 Plug onto the SINEC L1 cable will create some additional "fun". Bottom line: I don't think trying to keep the old SINEC L1 cable is worth taking the risk and 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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2/1/2010 7:08 AM	Rate (0)
fritz Diamond Expert Joined: 10/7/2005 Last visit: 1/20/2025 Posts: 3031 Rating: (1058)	Hello again Andy Parry it appears you are not the only one who would like to re-use old cabling for a new Ethernet based Network. I've just come across theWestermo DDW222 device which claimsto allow you to do exactly what you intend to do (andmakes a mockery out of my previous advise should it indeed work as it says it will). Anyway, thought this Westermo developement might interest you or others and you can find out more about it at thelink below: http://www.westermo.com/Resource.phx/content/products/ethernet/ethernet-extender/ddw-222.htx
	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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