P12x/EN T/Eb6 - Schneider - error

CommunicationsP12x/EN CT/Eb6COURIER DatabaseMiCOM P120/P121/P122/P123 Page 51.4.3 Status wordEach response of a slave periphery contains an octet of status. This octet is resent by therelay at the beginning of each message for signalling important data. The principalworkstation can be design for responding automatically to these important data.The contained indications are the following:Bit 0 - 1 =Bit 1 - 1 =Bit 2 - 1 =Bit 3 - 1 =Bit 4 - 1 =Bit 5 - 1 =Bit 6 - 1 =Bit 7 - 1 =Recording of disturbance available for retrievalChange of the Unit status wordChange of the control status wordRelay busy, no response possible in timeRelay out of serviceRecording of events available for retrievalSwitched alarm indicatorSwitched tripping indicatorOnly bits 3,4 and 7 are used for version P121.Bits 1, 3 4, 5 and 7 are used for versions P120, P122, P123.1.4.4 Unit status wordThe unit status word is located in the menu 000C.Each bits pair of the Unit status word serves to indicate the status (position) of the unitelements checked through the relay.This functionality is not supported on MiCOM P120, P121, P122 and P123 relays.1.4.5 Control status wordThe Control status word is located in the cell of the menu 000D.It is used for transmitting the control information of the slave periphery to the central unit.Nevertheless, the relays described in this manual are protection relays, which are not usingthis control characteristic.1.4.6 Logic input status wordThe logic control input status can be observed in proceeding to a selective call from the cellof menu 0020. The 2 bits inferior of the returned value indicating the status of each of the 2logic inputs. This cell is accessible only in reading.Bit 0: logic input 1Bit 1: logic input 2Bit 2: logic input 3Bit 3: logic input 4Bit 4: logic input 51.4.7 Output relay status wordThe output relay status can be observed in proceeding to a selective call from the cell ofmenu 0021. The 8 bits inferior of the returned value indicating the status of each of the 5output relays. This cell is accessible only in reading.Bit 0: relay 1 (TRIP)Bit 1,2,3: programmable relays n° 2,3,4Bit 4: WatchdogBit 5,6,7,8: programmable relays n° 5,6,7,8