| 摘要 |
<p>A frequency converter ( 100 ) comprises a processor ( 102 ), memory ( 104 ) and basic software ( 106 ) in the memory, the execution of which software implements the basic functionality of the frequency converter. For application-specific customization, the memory of the frequency converter is arranged to include application software ( 108 ) that contains callable functions ( 210 ) and is installable separately from the basic software. The frequency converter is arranged to execute the basic software ( 106 ) and the application software ( 108 ) with the same processor ( 102 ). The basic software ( 106 ) calls a function of the application software and/or provides functions of its own to be called by the application software indirectly via a link ( 240 <SUB>k</SUB>) in a call table ( 240 ), the location of the link in the call table being independent of the location of the function ( 210 ) corresponding to the link in the memory.</p> |
