ProSoft Technology MVI56E-DNPNET User Manual

Page 91

MVI56E-DNPNET ♦ ControlLogix Platform

Contents

DNPNET Ethernet Client/Server Communication Module

User Manual

ProSoft Technology, Inc.

Page 91 of 140

February 13, 2015

Clear

This parameter clears the queue. If the value is set to zero, the

queue is not affected. If the value is set to 1, the queue will be

cleared.

6 to 7

Trip/Close

These two bits select the trip or close relay. For close relay

control, set the bits to 01. For trip relay control, set the bits to

10. A value of 00 for the bits is used for single point control of

normal digital output points.

The commands placed in the normal command list for the Client port does not provide the

means for all the possible CROB operations. It only supports the latch on and off operations

based on the status of the associated database value specified in the command. With the

use of this block, outputs can be pulsed on or off for user specified count and time intervals.

Additionally, this command provides support for trip/close relay control.

Block 9902: Command Control
If the ControlLogix processor sends a block 9902, the module will place the commands

referenced in the block in the command queue. Commands placed in the queue with this

method need not have their enable bit set. Only valid commands will be placed in the queue.

Word Offset
in Block

Data Field(s)

Description

Block ID

This field contains the value of 9902 identifying the enable

command to the module.

Command count

This field contains the number of commands to enable in the

command list. Valid values for this field are 1 to 240.

2 to 241

Command

Numbers to

enable

These 240 words of data contain the command numbers in the

command list to enable. The commands in the list will be

placed in the command queue for immediate processing by

the module. The first command in the list has an index of 0.

242 to 247

Spare

Not Used

Up to 240 commands can be enabled and placed in the command queue with one write

request from the ControlLogix processor.

Note:

There is no response to this block by the module. The module will place the selected commands into the

command queue. If the command references an IED unit that is not in the slave list, the command will not be

placed in the command queue. Normal processing of the command list will continue after the commands

specified in this block are processed.

Block 9903: Event Message Block
When the DNPNET Client is configured to pass event messages from the port to the

processor, block identification 9903 will be utilized. When the Client port receives an event

message, it will place the data in the message into the event message queue. This queue

has room for up to 1000 messages.