o  communication port

    Name of the hardware port associated with this station, taken
    from the corresponding argument in the create directive. You
    cannot modify this characteristic.

 o  smt maximum version id

    Highest SMT version ID this station supports. You cannot modify
    this characteristic.

 o  smt minimum version id

    Lowest SMT version ID this station supports. You cannot modify
    this characteristic.

 o  smt version id

    Currently active SMT version ID for this station. You cannot
    modify this characteristic.

 o  station ID

    SMT station ID for this station. You cannot modify this
    characteristic.

 o  type

    SMT station type for this station. You cannot modify this
    characteristic.