ExternalLSReverseZPulse
This home type is identical to the LSReverseZPulse home type, except the positive and negative external limit switches are searched instead of the hardware limit switch.
Homing cannot be completed if the External LS Type parameter is set to None (or if the External LS Type parameter is set to SeparatePositiveLSNegativeLS and either External Positive LS Type or External Negative LS Type, depending on the Home Direction, is set to None).