split $1: sr/3hc/states3hc.01, $2: sr/devmapper/3hc cmd line device names
use two cmd line args : $1: sr/3hc/states3hc.01 for the new plc cry3hc tango device $2 : sr/devmapper/3hc for the rpc mapper (helial 3hc) direct link for 3hc cavities
use two cmd line args : $1: sr/3hc/states3hc.01 for the new plc cry3hc tango device $2 : sr/devmapper/3hc for the rpc mapper (helial 3hc) direct link for 3hc cavities