Operation instruction - Asennustuotteet

ABB i-bus ® KNXCommissioningMain Counter< NOTEData typeOptions:8 bit value [-128…127]8 bit value [0…255]16 bit value [-32,768…32,767]16 bit value [0…65,535]32 bit value [-2,147,485,648…2,147,483,647]This parameter defines the data type of the counter.This parameter defines the data type of the differential counter.Both of the following parameters are dependent on the parameter Data type.Depending on the Data type selected, different limit values are preset. Theinput fields can be freely edited.NoteThe first reset counter pulse that exceeds or falls below the limit valuesets the counter to the opposite limit value. With the next counter pulse,the new counter reading (set according to the respective counter value)continues to count in the parameterized counting direction.ExampleMode of main counter countingLimit value 1 [0] of the limit value is set to zero.Limit value 2 [255] of the limit value is set, for example to 10For each counter pulse 1 is added commencing at 0.0=>1=>2=>3=>4=>5=>6=>7=>8=>9=>10 with 10 counter pulses (=>) theupper limit is reached. With the next counter pulse, the counter is set tothe opposite limit value, i.e. to 0, and then continues again up to 10. Inorder to implement a circular count, 11 counter pulses are required here.NoteIt is necessary to ensure that both limit values are set to different values. Ifthe same limit values are defined, the behaviour of the counter isundefined.The limit values can be set to any value, i.e. limit value 1 can be greaterthan or less than limit value 2. The application program automaticallychooses, for example, the largest limit value from both set limits and startscounting upwards or downwards to suit the direction of counting.© 2011 ABB STOTZ-KONTAKT GmbH 129