ProSoft Technology MVI56E-DNPNET - Manual (Page 85)

MVI56E-DNPNET ♦ ControlLogix Platform Contents
DNPNET Ethernet Client/Server Communication Module User Manual
ProSoft Technology, Inc. Page 85 of 140
February 13, 2015
Step Description
1 The Client driver configuration data is obtained from the DNPNET configuration tags via
ladder logic. These values are used by the Client driver to determine the type of
commands to be issued to the other nodes on the DNP3 Ethernet network.
2 After configuration, the Client driver begins transmitting read and/or write commands to the
other nodes on the network. If writing data to another node, the data for the write
command is obtained from one of the module’s internal databases to build the command.
3 Presuming successful processing by the node specified in the command, a response
message is received into the Client driver for processing.
4 Data received from the node on the network is passed into the module’s appropriate
internal database, assuming a read command.
5 Status is returned to the ControlLogix processor for each command in the Client
Command List.
4.2.2 Function Blocks
Data contained in this database is paged through the input and output images by
coordination of the ControlLogix ladder logic and the MVI56E-DNPNET module's program.
Up to 248 words of data can be transferred from the module to the processor at a time. Up
to 247 words of data can be transferred from the processor to the module.
Each block transferred from the module to the processor or from the processor to the
module contains a block identification code that describes the content of the block.
Block Number Function/Description
0 or -1 Dummy Blocks: Used by module when no data is to be transferred
1 to 203 DNP and IED Data blocks
300 Error/Status, Error List Block, and slave IIN bits
1000 to 1022 DNP Output initialization blocks
1100 to 1193 IED Input initialization blocks
9000 - 9099 Configuration Data
9901 CROB Control Block for Digital Outputs
9902 Command Control Block (Add command to Command List Queue)
9903 Event Messages from Client port
9904 Places up to 24 Auxiliary Commands in the command queue.
9910 CROB Data received on DNPNET Port
9949 Server IED unit errors on Client port
9950 Command List Error data
9958 Binary Input Event data with Calendar time
9959 Analog Input Event data with Calendar time
9968 Binary Input Event data with CLX time
9969 Analog Input Event data with CLX time
9970 Set PLC time using module's DNP time
9971 Set module's time using PLC time