Library /sys$common/syshlp/nclhelp.hlb set, ddcmp (OpenVMS VAX), link, logical_station, address  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    Default: 1             Value: 1-255

    Data link address of the remote station or tributary. You can
    modify this characteristic only when the entity is disabled.

    set [node node-id] ddcmp link link-name -
        logical station station-name -
        address integer

    Example:

    set ddcmp link ddcmp-0 logical station ddcmp-0 address 1