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Node address, Data object, Data variation – ProSoft Technology MVI71-DNP User Manual

Page 43: Cmd function, Device address, Point count, Dnp db address, Ied db address

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Installing and Configuring the Module

MVI71-DNP ♦ PLC Platform

DNP 3.0 Master/Slave Communication Module

ProSoft Technology, Inc.

Page 43 of 172

August 23, 2007

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If Address in Slave > 0 & Point Count > 0, then use Qualifier 17h or28h

(points from Address in Slave to Address in Slave + Point Count –1)

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If Point Count <= 0, then ignore because this is illegal for outputs.

Node Address

This parameter specifies the IED unit address on the DNP network to consider
with the command. The parameter has a range of 0 to 65535. The value of
65535 is reserved for broadcast messages. Be certain the slave configuration
information is set up in the module for each slave defined in the command list.

Data Object

This parameter specifies the DNP object type in the command. Valid objects for
the module are 1, 2, 12, 20, 21, 30, 32, 41, 50, 60 and 80. A value of 0 is
permitted in this field for a set of special commands.

Data Variation

This parameter is specific to the object type selected.

Cmd Function

This parameter specifies the DNP function for the command list object. The
object type determines the value of the functions permitted. For example, the
only function permitted for binary input data points is the read function (Function
Code 1). For counter and output objects, more functions are available.

Device Address

This value must be greater-than or equal to zero. If it is set to a value less-than
zero, the command will be ignored. This parameter specifies the starting point
address to consider in the IED unit.

Point Count

This parameter defines the number of points in the IED unit. Refer to the
discussion above for the interpretation of this parameter's values for the different
object types.

DNP DB Address

This parameter defines the starting location in the DNP database to be used with
the command. If the parameter has a value of –1, the DNP database is not used
with the point.

IED DB Address

This parameter defines the starting location in the IED database to be used with
the command. If the parameter has a value of –1, the IED database is not used
with the point.