9/29/2020 8:02 AM | |
Joined: 9/30/2016 Last visit: 2/12/2025 Posts: 918 Rating:
|
Please also see the attached screenshots. We have had the direction of movement reversed on a drive by a subcontractor and I parameter 1821 has been changed from 0 to 1. But when I unfold p1821 there are values from p1821[0] to p1821[3] and only p1821[0] has been changed. What is the individual [0] to [3] since it is only neccessary to modify [0] and why is p1821 split up in 4 parts at all? Attachment1821.zip (324 Downloads) |
9/29/2020 11:47 AM | |
Joined: 4/28/2015 Last visit: 10/22/2024 Posts: 1278 Rating:
|
Hi, correct: p1821[0] is assigned to DDS1 .... p1821[3] is assigned to DDS4. Here I found in chapter 14.5 some description for data sets: https://support.industry.siemens.com/cs/ww/en/view/109771805 I would explain Data Sets to you that way: With different Data sets you can configure your drive behavior in different ways and switch between those configurations very easily via control bit. With the different data sets you could realize different closed loop control parameters (e.g. different speed controller settings) or handle also several hardware (motors, encoders). It is also often used to switch the setpoint source for your drive -> so you could switch between PLC control and local I/O control and swtich from fieldbus setpoint to a fixed setpoint for example. There can be various reasons why somebody would use more than one Drive Data Set. |
Best regards, |
|
This contribution was helpful to
1 thankful Users |
Follow us on