Example of "broken":

controls@opsws4:~ 7$ tdswrite -sw H2:HPI-ETMY_ISO_HP INPUT OFF
ERROR: can't read from H2:HPI-ETMY_ISO_HP_SW1R
controls@opsws4:~ 0$ ezcaswitch H2:HPI-ETMY_ISO_HP INPUT OFF
readback H2:HPI-ETMY_ISO_HP_SW1 not accessible
 

This make scripting difficult.