6/21/2010 4:17 PM | |
Joined: 9/27/2006 Last visit: 9/22/2024 Posts: 12282 Rating: (2685) |
Hello Stefan; Firts, at this point you do not require SFCs to read wqrite these values. You may try at a later stage, but for now, until you have more experience, just use the PIW and PQW addresses provided by the Profibus configurator when you setup a MM420 drive. The attached picture and the following manual should explain things better: Operating instructions: MicroMaster Profibus optional board:http://support.automation.siemens.com/WW/view/en/6586565 As you see, you cannot use PPO4 in your configuration, if you are setting up a MM420, only PPO1 and PPO3. Say you deciide to setup PPO3, (you remove the possibility of reading and writing to parameters from Profibus, but that is very different; for these you need SFC14/15). Say, again, the Profibus configurator allocates input and output addresses 256..259 to your drive interface using PPO3. You can interpret this this way: -PQW256 is the Control Word (To start the drive, write hex 447E, then 447F to this address) -PQW258 is the Speed reference word (hex4000=100%, 2000=50%... of max. configured speed) -PIW256 is the Control status word -PIW258 is the Speed staus word. Look at the following program samples for the MM4 series of drives, using Profibus. Start with the simple Load/Transfer program first, as it reflects better what I am trying to show you. You can look at SFC14/15 examples after that, once you understand the read/write mechanisms better. http://support.automation.siemens.com/WW/view/en/22813212 Hope this helps, Daniel Chartier |
6/22/2010 9:38 AM | |
Posts: 18 Rating: (6) |
hi stefy pls find attached program for mm4 drive plc comunication with PPO3.in which db1 is used to send data from plc to drive and db2 is used to receive data from drive. i hope it will help u. AttachmentProfibus.zip (544 Downloads) |
6/22/2010 10:35 AM | |
Posts: 30 Rating: (0) |
Thank you very much to all! A good day. |
5/24/2017 10:41 AM | |
Posts: 23 Rating: (0) |
Hey Sir , I have some question and I would like to find the answers with I am trying to control AC motors with Micromaster 420 , I am using SIMATIC MANAGER 5.5 , STARTER 4.5 and Drive ES - Generate DRIVDBx . I am using windows 7 Enterprise 46 bit my questions are 1- how I can use ( convert list to S7 data block) 2-what the relation between DRIVDBx and convert list to S7 data block
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5/24/2017 6:37 PM | |
Joined: 9/27/2006 Last visit: 9/22/2024 Posts: 12282 Rating: (2685) |
Hello; First of all, I do not understand what you mean by "convert list to S7 DataBlock". Could you explain what you are trying to do with more details? Second, DRIVDBx is a DataBlock generated in Drive ES Basic to contain the communictaion configuration of slave drives, in a Profibus network for example. See the contents of this manual: Drive ES SIMATIC V5.4 FB Lib DRVDPS7 Have a look at the attached screenshot. Hope this helps, Daniel Chartier |
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