unregister_point

Arguments

Returns

t on success, or nil on failure.

Description

This function causes the Cascade DataHub to immediately stop sending echo and exception messages for the named point. It is possible that exceptions and echos which are queued to the task will arrive after this function is called, but the datahub will not generate any new messages.

Example

    Gamma> register_all_points(nil,t);
    t
    Gamma> b;
    55
    Gamma> unregister_point(#b);
    t
    Gamma> write_point(#b,33);
    t
    Gamma> write_point(#c,77);
    t
    Gamma> next_event();
    nil
    Gamma> b;
    55
    Gamma> c;
    77
    Gamma> 
    		

See Also

register_point, register_all_points