Several connection options are available for DNP 3.0● Rear Port 1 (RP1) - for permanent SCADA connection via RS485● Optional fibre port (RP1 in slot A) - for permanent SCADA connection via optical fibre● An RJ45 connection on an optional Ethernet board - for permanent SCADA Ethernet connection● A fibre connection on an optional Ethernet board - for permanent SCADA Ethernet connectionThe IED address and baud rate can be selected using the front panel menu or by the settings application software.When using a serial interface, the data format is: 1 start bit, 8 data bits, 1 stop bit and optional configurable paritybit.7.3.2 OBJECT 1 BINARY INPUTSObject 1, binary inputs, contains information describing the state of signals in the IED, which mostly form part ofthe digital data bus (DDB). In general these include the state of the output contacts and opto-inputs, alarm signals,and protection start and trip signals. The ‘DDB number’ column in the device profile document provides the DDBnumbers for the DNP 3.0 point data. These can be used to cross-reference to the DDB definition list. See therelevant Menu Database document. The binary input points can also be read as change events using Object 2 andObject 60 for class 1-3 event data.7.3.3 OBJECT 10 BINARY OUTPUTSObject 10, binary outputs, contains commands that can be operated using DNP 3.0. Therefore the points acceptcommands of type pulse on (null, trip, close) and latch on/off as detailed in the device profile in the relevant MenuDatabase document, and execute the command once for either command. The other fields are ignored (queue,clear, trip/close, in time and off time).There is an additional image of the Control Inputs. Described as Alias Control Inputs, they reflect the state of theControl Input, but with a dynamic nature.● If the Control Input DDB signal is already SET and a new DNP SET command is sent to the Control Input, theControl Input DDB signal goes momentarily to RESET and then back to SET.● If the Control Input DDB signal is already RESET and a new DNP RESET command is sent to the ControlInput, the Control Input DDB signal goes momentarily to SET and then back to RESET.P446SV Chapter 21 - CommunicationsP446SV-TM-EN-1 549
