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about EtherNet connection

Created by: siem at: 6/12/2009 5:33 AM (3 Replies)

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6/12/2009 5:33 AM	Rate (0)
siem Posts: 27 Rating: (0)	Now I have a question: We will use S7-315-2DP (and CP343-1 IT)communcation with a PC through Ethernet. The PC software was developed by the supplier,they said they used "Socket programming in the TCP/IP network environment involves a classic client-server programming interface for IPC.For two processes to communicate with each other from different network machines, one must act as a server that passively waits for incoming connections, while the other acts as a client that actively initiates (requests) a connection. The server starts first, then the client processes." and "All messages exchanged between the computer systems are in ASCII code." Now I want to knowmy 315-2DP canbe communcation with this computer, If can ,how to do it？ Thanks!
siem Posts: 27 Rating: (0)
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6/12/2009 6:23 AM	Rate (0)
Niranjan Prasad Posts: 691 Rating: (37)	You can communicate with the CPU through your PC But make sure your Server -Client ethernet configuration is different and PC-Server Connection is different in the NetPro
Niranjan Prasad Posts: 691 Rating: (37)
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6/13/2009 9:08 PM	Rate (0)
Krish Silver Member Joined: 5/24/2007 Last visit: 4/24/2024 Posts: 284 Rating: (27)	hi Siem Have a look at this link fora demonstration system http://support.automation.siemens.com/WW/view/en/21043576 Basically you need to establisha TCP/IP connection with an unknown station with the IP address being the address of the PC which you like to communicate with.You configure it as Active in case you want the PLC tomake the connection while the PC just listens at a port. When it is passice, the CP makes the connections.All the nitty gritties of TCP/IP are taken care by the CP and all you have to do is send data using a AG_SEND block and receive dat using a AG_RECV block.You may need some special telegram handling. The following should help you get an idea on how to implement it . http://support.automation.siemens.com/WW/view/en/19033929 Have a try and let us know how it goes. Krish

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6/15/2009 5:07 AM	Rate (0)
siem Posts: 27 Rating: (0)	Thanks a lot.
siem Posts: 27 Rating: (0)
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