Slave components are all DiSEqC components e.g. LNBs, relays and multiswitches. Components, which are unfortunately named "DiSEqC compatible", can analyse only the ToneBurst, not however real DiSEqC commands.
DiSEqC 1.0 components react to the committed DiSEqC commands (Band, Polarisation, Position, Option), however the Slave cannot send a reply to the receiver.
DiSEqC 1.1 components react to the uncommitted switches, which are four additional control signals so that up to 256 IF signals can be controlled.
DiSEqC 1.2 components can control steerable dishes.
DiSEqC 2.0 components react to the DiSEqC commands for the committed switches and can send a reply for acknowledgement. Additionally the configuration bytes of the components can be read out, which enables an automatic receiver installation.