If you install a Sharpe 32 controller with a PH9, warn the user about the E-Stop. E-Stop cuts all power to the PH9. While this in itself is not a problem, when power is restored to the PH9, the readouts read 0,0, regardless of what angle it is actually at. To get the proper readout values, you need to press a key on the PH9 hand-held.
If the user has a PH10, it automatically resets to 0,0. Make sure there is no part below the PH10 when power is restored.