Limit switch inputs

13 years 3 months ago #18027775 by bgreat
Limit switch inputs was created by bgreat
Hello,

I use the controller in position mode using encoder feedback and RS232 control. Using the encoder multiplexed limit switch inputs is problematic. When a limit switch is reached, the corresponding encoder input is lost and the motor channel goes into a runaway state. This was covered in a previous <a target="_blank" href=" www.websitetoolbox.com/tool/post/roboteq...&highlight=limit ">forum post on 06/03/05. At the time, there was talk of a 2.0 software release for Q4 (2005) that would address this issue. Has there been any progress?

I know I can use route motor power through the limit switches and power diodes to provide a hardware limit, but I would still like to make use of the encoder multiplexed inputs to avoid the issue of running motor power through a mechanical switch and having life limit issues due to possible contact arcing.

Thank you,
Bill

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13 years 3 months ago #18042711 by cosma
Replied by cosma on topic Re:Limit switch inputs

The limit switch feature is currently being implemented. Beta release should be available within a week.

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13 years 3 months ago #18058941 by cosma
Replied by cosma on topic Re:Limit switch inputs
Beta software is available at <A href=" dev.roboteq.com/dev1/files/software/beta...p19b-052407-beta.zip " target=_blank> www.roboteq.com/files/software/beta/roboup19b-052407-beta.zip

There are two files:

The firmware update

An updated Roborun

Install the firmware update with Roborun (existing version is OK)

To install the roborun file, just move the roborun.exe in C:Program FileRoboteq folder. Overwrite the existing one.

Note that this must be done over a Roborun v19 installation. If your installed roborun is older, you must first update it by getting the latest official release at <A href=" dev.roboteq.com/dev1/doclink.html " target=_blank> www.roboteq.com/doclink.html

To use the limit switches, fist go to the encoder tab and verify that the spinning encoder changes the count and leave the switches alone. Then verify that the swiches changes the screen.

Then enable the limit switches from the Control tab.

The limit switches will prevent spinning in one direction or the other for a given motor. They work in open loop or closed loop speed, or position.


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13 years 3 months ago #18084813 by bgreat
Replied by bgreat on topic Re:Limit switch inputs
Thank you. I'll give it a try.

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