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| 9/8/2010 8:25 PM | |
Joined: 9/27/2006 Last visit: 1/22/2025 Posts: 12330 Rating:
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Hello ANMAO; As pointed out by Umencho, English is the language of this sectrion of the forum (German is used in the second section). Answers will be provided in English. I hope you can live with this. Whenever you want to setup a Profibus-DP slave in a Profibus configurator (Step 7 HWConfig editor in your case) you need to import the GSD file for this slave in the configurator. It should be available on the manufacturer's website, or in a accompanying CD.Once this is done, you can select an instance of your drive, and select the type of exchange you want to establish (including the reuqired "tags". Danfoss drives use the Profidrive profile when communicating over Profibus. This means that when you setup a drive as a Profibus slave, you must select between 5 different telegrams, named PPO1, PPO2...PPO5. See the following document for the VLT5000 drive: http://www.danfos.info/content/files/VLT5000_PROFIBUS_MG10E402.pdf Selecting PPO3 will be simplest, as it only reserves 2 words: Control Word, andBUS (speed)reference. The control word is a pattern of bits that you must set according to your requirements; but you must write it to the drive as a single word value. The bus reference selects the speed that the drive will run at by applying a percentage of the maximum speed selected in the drive parameters; hex 4000 means 100%, hex 2000 means 50%, hex 1000 means 25%... Look at the following attachment, it contains a S7-300 sample program to control a VLT5000 Danfoss VFD, provided by Danfoss. Use it as a basis for your own program. Hope this helps, Daniel Chartier AttachmentDanfoss.zip (316 Downloads) |
| 9/8/2010 8:29 PM | |
Joined: 3/21/2006 Last visit: 1/14/2025 Posts: 10239 Rating:
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Hello, All dipends what you want to see and control. I don't know what model Danfoss drive you have. For example, take a look at http://mcliterature.danfoss.com/WebP...c_MG52B202.pdf. On 90th page you can see the Control/Status bit info. Also look at Daniel answer'in other forum - S7 - Profibus - Danfoss VLT 5000. Best regards, Hristo Mihalev |
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| 9/9/2010 7:42 PM | |
Joined: 9/8/2010 Last visit: 1/23/2019 Posts: 3 Rating:
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thank very much for your information, I will review this information and proved. Thank you |
| 9/10/2010 4:55 PM | |
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Joined: 9/8/2010 Last visit: 1/23/2019 Posts: 3 Rating:
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good day with the CPU 312C, don't i can use profibus communication? thanks. |
| 9/10/2010 5:21 PM | |
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Joined: 9/27/2006 Last visit: 1/22/2025 Posts: 12330 Rating:
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Hello ANMAO; The CPU 312C is the smallest of the S7-300 compact CPUs. It only has 32 kB of working memory, and the integrated interface is only available for MPI (programming device) comms. If you want to have a Profibus-DP interface with that CPU, the only option is to use a CP 342-5. But it does not work exactly as the standard integrated profibus interface in the -2DP CPUs: have a look at the following FAQ: What should you watch out for when configuring a CP342-5 as DP master? http://support.automation.siemens.com/WW/view/en/18208090 Hope this helps, Daniel Chartier |
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