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Detailed help in netpro required...

Created by: rajasekhar at: 9/30/2007 2:36 PM (6 Replies)

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9/30/2007 2:36 PM	Rate (0)
rajasekhar Advanced Member Joined: 1/22/2006 Last visit: 10/8/2020 Posts: 73 Rating: (0)	Dear All, A PC-Station is a virtual station where simatic modules are present like CP5613...In our case there are three PC-Stations...All having OPC server and CP5613. My system consists of 2 S7-400 PLC'swith 3 PC Stations Prog, BK and TK. Let me suppose that I am working in a PC where configuaration of PC-Station(Prog) is imported in station configuarator...I have created some new tags in Intouch....After creation of the tags...I am right clicking this PC-Station(Prog) in netpro and download submenu and finally selected stations menu... Actually what happens in this operation what is being downloaded into where?? what is the source and destination is my doubt... The S7 help is: When you save the connection table, connection data are generated which must be downloaded to the participating programmable modules (CPUs/FMs). In programmable controllers with multicomputing capability (such as S7-400) a number of CPUs can be inserted in a station. Each of these CPUs can have its own connection table. Using the menu command PLC > Download to Current Project > Selected Station(s) the connection tables and the hardware configuration are downloaded to selected stations; that is, to the CPUs in the selected stations (to each CPU its own connection table). The menu command can be used for all types of connection. I am not able to understand the help given above. Fundamentally I need to tell Simatic OPC Server in every PC-Station that I have created new tags. Is this happening with download....This is my guess. Attachment netprosubmenu.jpg (475 Downloads)

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9/30/2007 9:28 PM	Rate (0)
J_Bell Posts: 5822 Rating: (412)	Hello, I try to understand... so you created some Tags, did you create Symbols in the Symbolic Table? If so I think it can be said that these are compiled and stored to the System the Download is made to... but do you configure the Symbols for Data in the PLC or in the PC? Best regards J_Bell
J_Bell Posts: 5822 Rating: (412)
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10/2/2007 8:18 AM	Rate (0)
rajasekhar Advanced Member Joined: 1/22/2006 Last visit: 10/8/2020 Posts: 73 Rating: (0)	J_Bell I try to understand... so you created some Tags, did you create Symbols in the Symbolic Table? If so I think it can be said that these are compiled and stored to the System the Download is made to... but do you configure the Symbols for Data in the PLC or in the PC? J_Bell Yes Mr.Bell....I have created symbols in symbolic table....Yes I have configured the symbols for data in the OPC Server (PC)... Ithink the symbols are not bothered by PLC they are of user purpose only....PLC bothers only on address....If the above concept is correct...then download operation should mean just compiling my symbol table (ie., symbols blocks in S7 Program) in the project (the symbols block is not present in the PLC's memory) and downloading this to the OPC Server (which is also in the hard disk of the PC) So in the above operation PLC is not at all involved........Am I correct?

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10/2/2007 12:15 PM	Rate (0)
J_Bell Posts: 5822 Rating: (412)	Well... have you tried to see the symbols with the Symbolic-File-Editor of SIMATIC NET. I think if the values are added you will find them there. Best regards J_Bell
J_Bell Posts: 5822 Rating: (412)
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10/3/2007 4:35 PM	Rate (0)
rajasekhar Advanced Member Joined: 1/22/2006 Last visit: 10/8/2020 Posts: 73 Rating: (0)	Dear Bell, If you mean OPC Scout.....yes i have observed newly created tags only after download operation. Thank You,

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10/3/2007 10:27 PM	Rate (0)
J_Bell Posts: 5822 Rating: (412)	Hello, just one additional question, if you download the PC Station configuration to the other two PCs (that use this CPU where you added the Symbols to), are there also the new Symbols available if you check the OPC Scout? Best regards J_Bell
J_Bell Posts: 5822 Rating: (412)
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10/4/2007 5:25 PM	Rate (0)
rajasekhar Advanced Member Joined: 1/22/2006 Last visit: 10/8/2020 Posts: 73 Rating: (0)	Hello, Yes they are available....One more thing to share is.....I have gone thru one technote from wonderware forums that "When we do download operation by selecting a pc station from netpro....it is actually downloading the configuration (I mean symbol configuration) to PLC" but which PLC?? is determined by the local id and partner id and etc., configured... Regards, rajasekhar.

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