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WinCC - OPC - S7-200

Created by: RaGud at: 2/15/2008 12:26 AM (5 Replies)

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2/15/2008 12:26 AM	Rate (0)
RaGud Posts: 46 Rating: (1)	Hi all, I am using WinCC to connect to S7-200 via IE/OPC. Well I'm not on to the WinCC part yet, still stuck on the bleedin' OPC I have already read several dozens of FAQs and forum threads, not to mention that I followed all the step by step guides and app. notes while commissioning the setup. All with limited success. I can ping the CP243-1 from the PC station and also connect to the CPU224 via IE using Step7 Micro/Win. Since I cannot get the OPC Scout to work on the damn thing, I must be doing the config at one or both ends wrong. How can I do further fault finding??? The PC station (WinCC V6.0 + SP3 + HF2) is runningon Win XP +SP2 with Step7 V5.3 + SP2 and Step7 Micro/Win V4. I would appreciate any help you can offer on this problem. I included some screenshots, configs etc. in the attachement - hope it helps. Best regards, Ragud Attachment S7-200_OPC.zip (392 Downloads)
RaGud Posts: 46 Rating: (1)
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2/15/2008 12:59 PM	Rate (0)
J_Bell Posts: 5822 Rating: (412)	Dear RaGud, how does the following two things look like: 1. The Ethernet Wizard in STEP7-Microwin. 2. The Tool S7-Redconnect - S7 Connection diagnosis? This especially with the information’s about the used Connections in detail. Than we can say more about the current situation. Best regards J_Bell
J_Bell Posts: 5822 Rating: (412)
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2/16/2008 9:28 AM	Rate (0)
RaGud Posts: 46 Rating: (1)	Hi J_Bell and thanks again for your help. 1. The Ethernet Wizard setup in Step7 Microwin can be seen in the screenshots I sent earlier, albeit in the form of the data block ETH2_DATA. 2. Thanks, this was the diagnostics tool I was looking for a) In the S7-200 I have local TSAP 10.02 (PLC) and remote TSAP 10.01 (PC). b) In NetPro I have local TSAP 10.01 (PC) and remote TSAP 10.02 (PLC), this I have both downloaded and imported into the station configurator many times. c) In S7-Redc. - S7-Conn. Diagn. I read local TSAP 10.11 and remote TSAP 10.02 The S7 Connection diagnostics also switches between: Path Error Number: 0 - 16 Path State: Down - Abort How do I rectify this discrepency in TSAP between the Station Config. and the infopicked up bythe S7 Diagnostics tool? Best regards, Ragud
RaGud Posts: 46 Rating: (1)	Last edited by: RaGud at: 16.02.2008 09:51
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2/16/2008 9:26 PM	Rate (1)
J_Bell Posts: 5822 Rating: (412)	Dear RaGud, I am sorry... my question was asked that way because I know that the Version 6.3 and maybe the Version 6.4 of SIMATIC NET changes the local TSAP a bit... itself... I have no idea why but I know this tool to check what is really going on seen from the Interface. To tell you the truth... I think the easiest way to get this to work is changing the remote TSAP on the S7-200 to the value the diagnostic Tool shows... any other solution would be based upon try and error. I do not know which value to set to get the TSAP to ...01. Best regards J_Bell
J_Bell Posts: 5822 Rating: (412)	Last edited by: J_Bell at: 18.02.2008 09:37
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2/18/2008 4:39 PM	Rate (0)
RaGud Posts: 46 Rating: (1)	BINGO ! Once again, you are right on the money! The connection is working now. I did as you suggested changed the address in the CPU to match the address in the S7-connection diagnostics tool. Nevertheless, I am very surprised to learn of a s/w fault like this and it hasn't been rectified. Does this only affect OPC connections under certain conditions? Do you know of any literature outlining this problem? Anyways, thanks a lot for your help. Until the next OPC problem (which I will tackle tomorrow), take care. Best regards, Ragud.
RaGud Posts: 46 Rating: (1)
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2/18/2008 4:52 PM	Rate (0)
J_Bell Posts: 5822 Rating: (412)	Dear RaGud, I am sorry...but I also do not know any document telling this, but in fact I had the same situation, about two years ago, and had to see the same you did, therefore my recommendation. As I do not know if this behavior is still the same with V 7.0 (Edition 2007) I am not sure if a FAQ would solve this... I will see as soon as I have V 7.0 of SIMATIC NET Software installed. At the moment I expect thisto bea problem with all S7-Connections within the Version 6.3 / 6.4 to unspecified Partners. If you have a specified partner it seems to work. Best regards J_Bell
J_Bell Posts: 5822 Rating: (412)
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