4/21/2010 4:11 PM | |
Posts: 9 Rating:
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What is the frequency of PWM generated by PID_Compact? How can I change it (if it is possible)? Best regards. |
4/28/2010 1:11 PM | |
Joined: 9/23/2005 Last visit: 8/27/2024 Posts: 4347 Rating:
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Hi, you are rigth. The QD1000 is just a setpoint. |
Denilson Pegaia |
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4/28/2010 4:26 PM | |
Posts: 9 Rating:
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So is there a way to know if output is off/on while using hardware PWM? In the meantime I wrote PWM generator by myself, but this is not a right way, right? |
4/28/2010 5:44 PM | |
Joined: 9/23/2005 Last visit: 8/27/2024 Posts: 4347 Rating:
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Hi, Don't worry, I have just now wrote a PWM converter to you. I will post it in a separete tip. See https://www.automation.siemens.com/BR/tf/WW/en/Posts/42960#207881 In this mean time, I consult my colleges in Germany, andthey confirm to us that there is no setup for the PWM "cycle" time. In this context, I presume that the PID compact of the S7-1200 using the LMN output,has asimilar concept as FB42 CONT_S of the S7-300/400. About the Hardware PWM, it makes no sense to try "read back" this output, once this timing is normally faster as the user program. |
Last edited by: Pegaia at: 4/28/2010 5:59 PMLast edited by: Pegaia at: 4/28/2010 5:48 PMDenilson Pegaia |
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4/28/2010 6:09 PM | |
Posts: 9 Rating:
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Thanks for your code |
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