GE Multilin D30 Line Distance Protection System E-11APPENDIX E E.2 DNP POINT LISTSEE.2.4 ANALOG INPUTSThe DNP analog input data points are configured through the PRODUCT SETUP COMMUNICATIONS DNP / IEC104 POINTLISTS ANALOG INPUT / MME POINTS menu. Refer to the Communications section of Chapter 5 for additional details.It is important to note that 16-bit and 32-bit variations of analog inputs are transmitted through DNP as signed numbers.Even for analog input points that are not valid as negative values, the maximum positive representation is 32767 for 16-bitvalues and 2147483647 for 32-bit values. This is a DNP requirement.The deadbands for all Analog Input points are in the same units as the Analog Input quantity. For example, an Analog Inputquantity measured in volts has a corresponding deadband in units of volts. This is in conformance with DNP Technical Bul-letin 9809-001: Analog Input Reporting Deadband. Relay settings are available to set default deadband values according todata type. Deadbands for individual Analog Input Points can be set using DNP Object 34.Static (Steady-State) Object Number: 30Change Event Object Number: 32Request Function Codes supported: 1 (read), 2 (write, deadbands only), 22 (assign class)Static Variation reported when variation 0 requested: 1 (32-Bit Analog Input)Change Event Variation reported when variation 0 requested: 1 (Analog Change Event without Time)Change Event Scan Rate: defaults to 500 msChange Event Buffer Size: 256Default Class for all Points: 2
