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khatana
Junior 2
Joined: 04 Oct 2012
Posts: 21
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 Posted: 02/11/2012 10:06 Post subject: WINCC v7 communication with Modbus TCP device |
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Dear All,
I want to communicate Modbus RTU devices through Modbus TCP gateway.I have successfully connected with gateway but there is address error on tag.So no process value shown.Is there any solution?
Regards |
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mojo
Senior
Joined: 01 Oct 2011
Posts: 2404
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| Posted: 02/11/2012 21:59 Post subject: Re: WINCC v7 communication with Modbus TCP device |
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| khatana wrote: | Dear All,
I want to communicate Modbus RTU devices through Modbus TCP gateway.I have successfully connected with gateway but there is address error on tag.So no process value shown.Is there any solution?
Regards |
First of all see if you are really in communication with WinCC...
Install drivers....
and check if you are in connection with your gateway...
..define the channel properties regarding the tags...
..and access the registers of your gateway...
Did you follow this steps..???? |
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khatana
Junior 2
Joined: 04 Oct 2012
Posts: 21
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| Posted: 06/11/2012 21:07 Post subject: wincc address error on Modbus TCP |
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Dear Sir,
Please see the attached snapshot of first modbus simulator addreesses and their corresponding valueus and then wincc address error[url=http://www.99poze.ro/p/81fb811f3d7f2782ac465308f5286070.jpg] [/url]+ |
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khatana
Junior 2
Joined: 04 Oct 2012
Posts: 21
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| Posted: 06/11/2012 21:09 Post subject: Required register address according to manual |
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Please see required registers of my device[url=http://www.99poze.ro/p/3221a0d10ee6a74d409446fabc049fb2.jpg] [/url]+
The device sends data of voltage at 40001 as in modbus simulator table(attached previously) but accordin to manual it should send at 0000 but both addresses there is no value recieved in wincc and device shows only RX and TX indication blink in simulator connection but only RX indication blink during Wincc connection |
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mojo
Senior
Joined: 01 Oct 2011
Posts: 2404
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| Posted: 07/11/2012 22:46 Post subject: |
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| You are using a Modbus Simulator not a really device ?... or I do not understand well...??. |
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khatana
Junior 2
Joined: 04 Oct 2012
Posts: 21
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| Posted: 14/11/2012 19:45 Post subject: Modbus TCP on WINCC |
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Dear Sir,
I identify first modbus simulator which shows data on same connection settings and secondly i shows wincc setting and result |
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