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S7 Connection

Created by: Mr Vazquez at: 4/14/2016 8:48 PM (5 Replies)

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4/14/2016 8:48 PM	Rate (0)
Mr Vazquez Posts: 4 Rating: (0)	The s7 connection is possible if I am using a NAT (Network Address Translation) for to change the IP of one plc?? Help me please
Mr Vazquez Posts: 4 Rating: (0)
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4/14/2016 10:06 PM	Rate (0)
Davinator Gold Member Joined: 1/4/2013 Last visit: 3/19/2025 Posts: 1169 Rating: (106)	Why you need it ? If you just browse ur network with TIA/S7 utility you can see everything and change IP/PN Name/Subnet/Gateway, etc etc....
	Searching for Siemens used/new equipments ? Take a look here : https://www.ravettiautomation.com
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4/14/2016 10:23 PM	Rate (0)
Mr Vazquez Posts: 4 Rating: (0)	Davinator Why you need it ? If you just browse ur network with TIA/S7 utility you can see everything and change IP/PN Name/Subnet/Gateway, etc etc.... Hi I want to develop the following application: 1.- I have two plc s7 1500 with different IP, for this reason I am using a NAT for to change the IP of one plc. 2.- I need to use the function PUT/GET for to write and read between the two plc. For that I did the s7 connection but I have the problem what the s7 connection is not working.
Mr Vazquez Posts: 4 Rating: (0)
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4/15/2016 9:55 AM	Rate (0)
Duris_I Diamond Expert Joined: 4/28/2015 Last visit: 2/24/2025 Posts: 10832 Rating: (836)	Hello, maybe this topic helps you: https://support.industry.siemens.com/cs/document/109474590/what-are-the-differences-between-the-put-and-get-instructions-for-s7-communication-and-s7-basic-communication-?dti=0&lc=en-DE Give info pls.
	With best regards... Ivan Duris Flight: OMICO
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4/15/2016 11:43 AM	Rate (0)
Bizz Regular Member Joined: 10/7/2011 Last visit: 12/12/2024 Posts: 28 Rating: (2)	Hi I'm in your same situation...next week i need to create a comunication with two plc (using PUT/GET) but in two different network, for divide the network I'm using the eWon Flexy for remote assitance and for the moment I have create a NAT1:1 from WAN to LAN and a port forwarding on the port 102 from LAN to WAN to the othe CPU. I hope this work otherwise im ina very big problem. Have you test your NAT? How work? What do you have used for create the NAT?
	Last edited by: Bizz at: 4/15/2016 1:31:28 PM
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4/15/2016 12:35 PM	Rate (0)
Navnag Platinum Expert Joined: 11/21/2007 Last visit: 3/16/2025 Posts: 2326 Rating: (309)	Mr Vazquez The s7 connection is possible if I am using a NAT (Network Address Translation) for to change the IP of one plc?? Help me please Although I have never tried it, I think it should be possible to have a Ethernet PG / OP access with NAT as long as the relevant ports are forwarded. However a PROFINET connection is not permitted in Routed networks. Hope this helps Cheers Navnag
	There is no such thing as the last bug in a program There are no stubborn bugs, There are only stubborn Debuggers.
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