1/4/2019 4:15 PM | |
Joined: 9/27/2006 Last visit: 9/22/2024 Posts: 12282 Rating: (2685) |
Hello Nika; To enable data exchanges over Profibus with a MM4 drive, you need to set the type of telegram (in Hardware Configuration) using the different tyoes of PPOx structures. Then the first 2 words of PZD are always the «control word (start/stop and other digital commands) and the Speed reference. Basically, to start the motor, you must write the hex values 047E and 047F in 2 subsequent writes to PZD1, so the LSB of PZD1 shows a rising front. That will start the drive, at the speed written to the Speed Reference (PZD2). The Speed reference word is also a Hex value, this refers to the maximum speed configured in the drive parameters (P2000, see screenshot below). A hex value of 4000 represents 100% of this parameter (say 50 Hz), 2000 means 50% (say 25 Hz, in this case), 1000 requests 25% (say 12,5%), and so on. You will find much more complete information in the following manual, and the additional discussions contain details and important links to sample programs (with and without SFC14/15). - Operating Instructions: MICROMASTER PROFIBUS Optional Board https://support.industry.siemens.com/cs/ww/en/view/6586565 - Communication Between PLC & VFD(Micromaster 440) - data transfer between mm40 and s7 400 Hope this helps, Daniel Chartier |
Last edited by: dchartier at: 1/4/2019 4:59:51 PM |
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1/4/2019 4:57 PM | |
Posts: 3 Rating: (0) |
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Last edited by: Nika-Hossein at: 1/5/2019 5:20:43 AMLast edited by: Nika-Hossein at: 1/5/2019 5:21:32 AM |
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1/5/2019 5:22 AM | |
Posts: 3 Rating: (0) |
Dear dchartier Thanks for your guidance |
Last edited by: Nika-Hossein at: 1/5/2019 5:45:57 AM |
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