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Communicating with Profinet over Modbus TCP

Created by: richardstarr at: 11/15/2010 2:16 PM (3 Replies)

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11/15/2010 2:16 PM	Rate (0)
richardstarr Posts: 10 Rating: (0)	Hi, I have a profinet network with a number of ET200S units connected, but I need to connect some PAC4200 modules. I have 4 PAC4200 units, split between 2 locations (2 at each), but to connect these to my system I would have to buy 4 DP expansion modules and 2 IE/PB links which is going to be really expensive. Would it be possible to communicate with the PAC4200 units using modbus over TCP? If so could anyone provide details of firstly what additional hardware I would need, and secondly how I would integrate this into Step7 Many thanks Richard
richardstarr Posts: 10 Rating: (0)
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11/15/2010 3:07 PM	Rate (1)
dchartier Grandmaster Joined: 9/27/2006 Last visit: 11/16/2024 Posts: 12294 Rating: (2691)	Hello Richard; Profinet uses a TCP/IP physical layer and data transmoission layers; as such, many protocols can cohabitate on the network without problems, as long as collisions do not interfere with transmissions (Profinet is immune, not Modbus/TCP). If you care to check, you can search the forum on the subject, you will see that the question has been asked a few times before, and that the consensus is that you can go ahead.One example: PROFINET TCP/IP and Modbus TCP/IP Hope this helps, Daniel Chartier
	Last edited by: dchartier at: 11/15/2010 3:08 PM
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11/15/2010 3:16 PM	Rate (0)
smiffy Platinum Member Joined: 1/17/2007 Last visit: 10/21/2024 Posts: 1547 Rating: (537)	You do not need any additonal hardware. You can use the PN port of the CPU for modbus TCP. You will need some additional software from IT4Industry. See this post.
	Programming today is the race between software engineers building bigger and better idiot proof programs, and the universe producing bigger and better idiots. So far, the universe is winning...
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7/21/2015 10:31 AM	Rate (0)
Min_Moderator Platinum Member Joined: 9/3/2014 Last visit: 3/13/2019 Posts: 4766 Rating: (122)	New question published by R.R. is split to a separate thread with the subject Change communication from Horner PLC's to SIMENS S7 PLC's. Best regards Min_Moderator

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