Can a servo motor with an absolute position encoder not require an origin switch?

"Can a servo motor with an absolute position encoder not require an origin switch?"
The origin switch is used to define the origin, as long as you can ensure that the current position of the servo axis is the origin, then this "origin switch" is optional. For example, if you visually see the "origin", it is considered the origin.

"I remember to use a front and rear limit and a near origin for relative positions."
Are you referring to the PLC's built-in return to origin function, with one near point and two limit points.
It feels like it's optional. The near point is usually used to slow down when returning to the origin, and the front and rear limits are used to protect the machinery.
I like to write my own program back to the origin, run JOG, and then trigger the current position to "0 point", which is the bus servo returning to the original 35 mode;

"Is it better to use absolute position or relative position for turntable servo? "
The turntable needs to be stuck once every time it passes through a workstation. What control method can be used to minimize the cumulative error as much as possible! And prevent the servo alarm from getting stuck in the workstation after a few turns.

"The turntable needs to be stuck once every time it passes through a workstation. What control method can be used to minimize the cumulative error as much as possible! And prevent the servo alarm from getting stuck in the workstation after a few turns."
If you walk to a certain position every time, you must use relative positioning. As for accuracy, it depends on whether you calculate the distance correctly. Anyway, the servo allows it to go as far as you want it to go.
PS: It doesn't matter whether the pulse axis is absolute or incremental. If it's a bus, it's recommended to use absolute value servo.