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Generating PTO

Created by: pratik7332 at: 2/21/2013 8:08 AM (8 Replies)

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2/21/2013 8:08 AM	Rate (0)
pratik7332 Bronze Member Joined: 11/26/2009 Last visit: 9/11/2024 Posts: 221 Rating: (1)	Hi, I have CPU314 and SM322 module with it. The 4 (DO)Digital output of the PLC is connected to Servo Drive and i have to give the pulse of certain width to the servo so that it moves the spindle to the fix distance. I want to know how can i do that in S7300. Its PWM kind of stuff here . Thankx Pratik

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This contribution was helpful to 1 thankful Users Ahmedsharaf

2/23/2013 3:35 PM	Rate (0)
Payam Posts: 5 Rating: (0)	Hi, The Best Solution as far as I Know to Create PTO or PWM Output is Using a 2 PULSE Module (6ES7 138-4DD00-0AB0) In a Profibus Network (ET-200S). Search for ET 200S Technological Functions PDF File. Goodluck Payam
Payam Posts: 5 Rating: (0)
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2/23/2013 5:47 PM	Rate (0)
UMENCHO Diamond Member Joined: 3/21/2006 Last visit: 9/10/2024 Posts: 10228 Rating: (1181)	There is possible to use a S7-300C CPUs too. In other way take a look at CPU 312 . One thread in which has discussed almost the same issue. It will clarify the points. Best regards, Hristo Mihalev

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2/24/2013 9:08 AM	Rate (0)
pratik7332 Bronze Member Joined: 11/26/2009 Last visit: 9/11/2024 Posts: 221 Rating: (1)	Hi, Thnx for the reply . But i am not geting the right help from that thread u have suggest. Please give me some more details. Thnkx

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2/24/2013 9:45 AM	Rate (0)
UMENCHO Diamond Member Joined: 3/21/2006 Last visit: 9/10/2024 Posts: 10228 Rating: (1181)	There is example PWM in case of using 'comon' DO. And the note is: "frequency is depending from size of programm and speed of digital output card". In order to jump over that is to use interrupt OBs (it depends from the type of CPu used). But also this way is limited to possible OBs min. interrupt time. Like a result the accurasy of possitioning will be limited. In your case - what is the type of CPU? best regards, Hristo Mihalev

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2/28/2013 10:10 AM	Rate (0)
pratik7332 Bronze Member Joined: 11/26/2009 Last visit: 9/11/2024 Posts: 221 Rating: (1)	hi, Thnk you for reply . My CPU is S7 314 and i have SM322 as i have mention above. I will see that example but as of now i am not able to achieve the postion even though i need only 1khz frequency.

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4/4/2019 4:32 PM	Rate (0)
hisham.plc Regular Member Joined: 10/11/2013 Last visit: 7/30/2019 Posts: 6 Rating: (0)	I have same problem and search a lot but nothing was correct

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4/4/2019 4:39 PM	Rate (0)
hisham.plc Regular Member Joined: 10/11/2013 Last visit: 7/30/2019 Posts: 6 Rating: (0)	i found solution in TIA Portal V13 but not with S7 314

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4/12/2019 11:37 AM	Rate (0)
Sachinpatke Silver Member Joined: 12/9/2010 Last visit: 10/8/2022 Posts: 623 Rating: (77)	Hi pratik7332, U can go through the manual in following link. In chapter 4, how servo/stepper is controlled with digital output is described. https://support.industry.siemens.com/cs/ww/de/view/12429336/en
	Last edited by: Jen_Moderator at: 4/12/2019 12:45:02 PM Optimized link. If you like the comment, rate it (right top) or thank it (left bottom). One who says he can & one who says he can't, are both correct-Confusius. Automation- C2C, Management Sachin Patke, India.
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