ABB i-bus ® KNXGroup objects472 2CDC508198D0211 Rev. A | AC/S 1.x.18.2 Group objects, generalNo. Object function Name Data type Flags2001 Request time Device clock 1 bitDPT 1.017(C, T)This group object requests the date/time from a time master after device start.30 seconds after the start this group object will send the value 1.2002 Date Device clock 3 bytesDPT 11.001C, R, (W), TThis group object receives the date from KNX if KNX was selected as the clock synchronization source in the DCA devicesettings. In all other cases the device date can be sent on the bus via this group object.2003 Time Device clock 3 bytesDPT 10.001C, R, (W), TThis group object receives the time from KNX if KNX was selected as the clock synchronization source in the DCA devicesettings. In all other cases the device time can be sent on the bus via this group object.Only time information is evaluated. Day of the week information is not taken into account.2004 Date/Time Device clock 8 bytesDPT 19.001C, R, (W), TThis group object receives the combined time and date from KNX if KNX was selected as the clock synchronization source inthe DCA device settings. In all other cases the combined device date can be sent on the bus via this group object.Only date and time is evaluated. Other information provided by this data point (e.g. year or weekday) is not taken into account.Table 13: Group objects