3/24/2023 9:00 AM | |
Posts: 3 Rating:
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Hi, I would like to have a synchronized motion of 4 axes. My first thought was to make a virtual master axis and 4 synchronous axes, then use MC_GearIn to synchronise them with master. Problem: In some post I have seen that MC_GearIn does only speed sync, so these axes will fail to sustain the exact same position - this is mandatory in my project. The solution would be, to use S7-1500T and use MC_GearInPos. Gantry Axis V1.0 this is an library/application, it almost exactly cover all my needs. It can work also on standard S7-1500 non-technolgy CPU and it uses MC_GearIn. How it is posssible? This application is built arround LAnyAxis, which doesn't have any manual or description - is this library that makes this posssible? Thank you for the answers. |
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3/24/2023 10:05 AM | |
Posts: 3 Rating:
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Please take a look on those llinks: SIMATIC S7-1500(T): Comparison of the Synchronization Modes They both rapresent that MC_GearIn is in fact keeps axes with the same position offset all the time, like a car clutch. Meanwhile the MC_GearInPos also synchronizes the position shift. My example, 4 drives with absolute encoders: 1. position each axis to the same abs. position 2. GearIn 3. move leading axis (one of 4 drives or virtual axis) Will all these axes have the same position after 1000 fwd/bkw cycles assuming that no one has the same friction? In my opinion, yes. But with assumption that they can follow the leading axes - else error as per Gantry axes application. AttachmentPDFs.zip (407 Downloads) |
Last edited by: markobursic at: 03/24/2023 10:58:57Last edited by: Jen_Moderator at: 03/27/2023 08:23:36PDFs attached from links. |
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3/28/2023 5:56 AM | |
Joined: 10/11/2006 Last visit: 1/22/2025 Posts: 5985 Rating:
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Hello, Yes, all these axes will have the same position after 1000 fwd/bkw cycles, because it is a setpoint coupling. If there is an error on a following axis, you have to stop the master. LaxsisCtrl use inside the MC commands, described in the S7-15000 manual. Documentation The documentation of the Motion Control functions is divided into the following documents:
https://support.industry.siemens.com/cs/ww/en/view/109812056 (https://support.industry.siemens.com/cs/ww/en/view/109812056) This document describes the innovations in the technology versions, functions that are used for all technology objects, and the process response of Motion Control applications.
https://support.industry.siemens.com/cs/ww/en/view/109812061 (https://support.industry.siemens.com/cs/ww/en/view/109812061) This document describes the technology alarms of the technology objects and the error identifications of the Motion Control instructions.
https://support.industry.siemens.com/cs/ww/en/view/109812057 (https://support.industry.siemens.com/cs/ww/en/view/109812057) This document describes the drive and encoder connection and functions for single-axis movements.
https://support.industry.siemens.com/cs/ww/en/view/109812059 (https://support.industry.siemens.com/cs/ww/en/view/109812059) This document describes gearing, velocity synchronous operation and camming as well as cross-PLC synchronous operation.
https://support.industry.siemens.com/cs/ww/en/view/109812060 (https://support.industry.siemens.com/cs/ww/en/view/109812060) This document describes the detection of the actual position via a measuring input and the output of switching signals via output cam or cam track.
https://support.industry.siemens.com/cs/ww/en/view/109812058 (https://support.industry.siemens.com/cs/ww/en/view/109812058) This document describes the control of kinematics with up to 6 interpolating axes. |
Last edited by: Jen_Moderator at: 03/28/2023 11:32:52Text formatting optimized. With best regards, |
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