Thanks for posting this very informative tutorial. I have some queries. What is the purpose of the position in the MC_HOME block? I want to home to a hardware limit switch, should I set this to zero? What is the function of MC_POWER block? The stepper driver does not give any feedback regarding status of power etc, so how does this affect the PLC?
Hi. Thank you. Ok so first the MC_Power (Ref page 161) block is to basically enable the stepper function, it releases or locks the Axis. Without this block you cant drive the stepper. You can monitor the Status bit of this block, its either TRUE or FALSE. The MC_HOME (Ref page 168) block you can use in several ways by changing the Mode of the block. The most common ones I use is either Mode 0 or 3. Mode 0 simply zeros your home value irrespective of where the stepper is at the moment for example if you jog the stepper 100mm and Execute the home block while in mode 0 the new value will become 0 and that will be your home position. You can use Mode 3 for active homing and have a home sensor or limit switch. You will need to set this up in the Technology object under configuration - Homing here you select the home sensor and how you want your homing to react. I always take a spare stepper motor with a long timing belt and idler pulley and position it in the middle of the belt then I play around with these functions till the desired effect is achieved. Hope this helps the reference pages can be found in the S7-1200 Motion Control V11 SP2 Manual. support.industry.siemens.com/cs/attachments/109773400/s71200_motion_control_function_manual_en-US_en-US.pdf If you have any further questions please feel free to contact me: tutorials@dcacrobotics.co.za
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It's one of the most comprehensive tutorials I have ever seen on TH-cam.
Very well explained, please make more staff like this.
Hi, please continue for such videos, it's one of the video i have watched very carefully, your speech is very clear, thank you very much
Thank you so much, sir. It was really helpful for me. Greets from Mexico. 🇲🇽🫡
Amazing! Thank you so much.
Hi,expecting more of this kind of video's.Narration and explaining things are very perfect.keep up the good work.Thanks.
Hi, Thank you for the kind words. Definitely more to come!
Thanks bra. Good video - I’m an AB guy who has to learn this S7 stuff. En dis cool om n local booitjie te support op dieselfde tyd
Baie dankie vir die support!
Thanks for posting this very informative tutorial. I have some queries.
What is the purpose of the position in the MC_HOME block? I want to home to a hardware limit switch, should I set this to zero?
What is the function of MC_POWER block? The stepper driver does not give any feedback regarding status of power etc, so how does this affect the PLC?
Hi. Thank you.
Ok so first the MC_Power (Ref page 161) block is to basically enable the stepper function, it releases or locks the Axis.
Without this block you cant drive the stepper. You can monitor the Status bit of this block, its either TRUE or FALSE.
The MC_HOME (Ref page 168) block you can use in several ways by changing the Mode of the block. The most common ones I use is either Mode 0 or 3. Mode 0 simply zeros your home value irrespective of where the stepper is at the moment for example if you jog the stepper 100mm and Execute the home block while in mode 0 the new value will become 0 and that will be your home position.
You can use Mode 3 for active homing and have a home sensor or limit switch. You will need to set this up in the Technology object under configuration - Homing here you select the home sensor and how you want your homing to react. I always take a spare stepper motor with a long timing belt and idler pulley and position it in the middle of the belt then I play around with these functions till the desired effect is achieved.
Hope this helps the reference pages can be found in the S7-1200 Motion Control V11 SP2 Manual.
support.industry.siemens.com/cs/attachments/109773400/s71200_motion_control_function_manual_en-US_en-US.pdf
If you have any further questions please feel free to contact me: tutorials@dcacrobotics.co.za
Very nice describe.
Perfect