Multi Signal Class Users Guide

3. Usage and Limitations


The multi signal class is foreseen to be used encapsulated in a device server class. Multi signal objects cannot be exported on the network and are not accessible via commands. Multi signal objects should be created with ds__create() and should be accessed via the ds__method_finder().

The resource database has only four fields to store the signal resources. Using the point as a separator between the signal name and the resource name limits the length of a signal name to 23 characters.

The maximum length of a resource to be stored as a string in the database is dependant on the database used and on the space reserved for a database table. The minimum size of 24 characters for a string, is fixed by most of the resource tables of the RTDB implementation. In this case a signal label cannot exceed this limit and a description must be split into a string array with strings not exceeding 24 characters.


Multi Signal Class Users Guide - 16 FEB 1998

Generated with Harlequin WebMaker