Limits

Limits are points along an axis where motion is stopped. Usually this is to prevent an axis from moving beyond the scan envelope into a position where it can run into other parts or the side of a tank.

Hardware Limits

Hardware limits are physical switches that disable motion when triggered. They are usually placed at both ends of any Linear axis in the system. Limit indications are fed to the motion control and will be displayed in PVA TePla-OKOS software.

Software Limits

Some motion controllers allow the ability to set limits at an arbitrary point. If available, these can be programmed through the software.

Latches

Some axes without limits (e.g. Turntables) may have a Latch function that triggers a signal when the position of the axis reaches a certain point. This can be useful for determining a zero position on the axis.