Cam or Gear for negative direction of master

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1

Hello Communitys.

We are currently using a mapp motion control setup with two servo axes in AS6.

The synchronization function operates correctly in the positive direction. Specifically, when the master axis moves from position 0 to 1000, the slave axis engages synchronization at master position 900, allowing master axes to reach position 1000 and slave axes to -100 simultaneously.

However, the synchronization does not function properly in the negative direction.
When the master axis moves from 0 to -1000, synchronization should ideally start when the master reaches -900. In our current configuration, this synchronization behavior does not occur.

Could you please verify whether bidirectional synchronization is supported for this function, or advise if there are specific parameters or configuration settings required to enable synchronization in the negative direction? or other ways too.

Now I am currently using synchronized motion for Mc_GearInPos, MC_CamIn, MC_BR_CalcCamFromSections and so on.

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2

Hello,

As far as i know CAM-Automat Coupling functions only support positive master directions. In Case you need a negative movement for a Axis you can use a virtual master runinng positive and couple the real Axis with a GearIn -1 : 1.

AS-Help MC_CamIn

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Greetings
Michael

3

Thank you for your reply.

I have also checked the description in the help documentation.
However, since the motion needs to go from 0 → 1000 → -1000 continuously without stopping, it seems that the same issue would occur even if a virtual axis is used.

Then, is there any other function block such as MoveCyclicPosition that can be used to create a similar behavior?

4

Hello,

if this previous master Axis has to go vorward and backward, you could use a CAM instead of GearIn 1:-1. I am not sure what the Period of your system looks like, the left CAM is not jet periodic we have to come back from -1000 → 0 if it has to run continuesly forward.

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Greetings
Michael