1. If the Home Switch is open (indicating a pos1tion on the positive side of home)
when the command is received, the axis is accelerated in the negative direction at
the JOG ACCELERATION rate and moved at the FAST JOG VELOCITY until
the Home Switch closes.
Note that a mechanical home-position limit switch is usually not repeatablv
accurate enough for this application. The encoder reference or marker pulse has
much greater repeat accuracy and is therefore a better reference point to estab
lish a starting point for subsequent measurements. The home limit switch is used
to signal the control that the next marker pulse signal received is "Home”in
multi-turn encoder applications.
2. The axis is stopped at the JOG ACCELERATION rate.
3. The axis is accelerated in the positive direction at the JOG ACCELERATION rate and moved at the FAST JOG VELOCITY until the Home Switch opens.
4. The axis is accelerated in the negative direction at the JOG ACCELERATION rate and moved at the SLOW JOG VELOCITY until the Home Switch closes and an encoder marker pulse is sensed by the control (in that order).
5. The axis is stopped at the JOG ACCELERATION rate.