Prosoft-technology MVI56E-DNPNET Manual do Utilizador descarregar pdf (Página 111)

MVI56E-DNPNET ♦ ControlLogix Platform Contents

DNPNET Ethernet Client/Server Communication Module User Manual

ProSoft Technology, Inc. Page 111 of 140

February 13, 2015

Block Offset

Content

1 to 240

Write data

241 to 247

Spare (Not used)

The Write Block ID is an index value used to determine the location in the module’s

database where the data will be placed as defined in the table presented in the previous

section. Each transfer can move up to 240 words (block offsets 1 to 240) of data.

In cases where the ladder logic uses Special Function Blocks, the normal Read Block IDs

and Write Block IDs will be replaced with a Special Function Block ID. Once the Special

Function has been processed, the module will resume the normal data Read Block ID and

Write Block ID sequence, starting from where the sequence was interrupted.

Trip/Close

The MVI56E-DNPNET module supports Trip/Close functionality for the DNP Binary Output

points when operating as a server.

This allows Trip/Close commands to be sent to the MVI56E-DNPNET module as a server,

for dual point control. Each DNPNET Trip/Close command will occupy 2 bits within the

module memory.

This does overlap the regular pulse on/off and latch on/off Binary Output database, therefore

special consideration must be used to make sure that points are not used twice.

The following table describes the address mapping for the module using Latch and Pulse

commands, and Trip/Close functionality.

DNPNET BO Database Point

BO Latch/Pulse Point

BO Trip/Close Point

BO 0

Close BO 0

BO 1

Trip BO 0

BO 2

Close BO 1

BO 3

Trip BO 1

BO 4

Close BO 2

BO 5

Trip BO 2

100

BO 100

Close BO 50

101

BO 101

Trip BO 50

1000

BO 1000

Close BO 500

1001

BO 1001

Trip BO 500

2000

BO 2000

Close BO 1000

2001

BO 2001

Trip BO 1001

3000

BO 3000

Close BO 1500

3001

BO 3001

Trip BO 1501

...and so on...

7998

BO 7998

Close BO 3998

7999

BO 7999

Trip BO 3999

1 2 ... 106 107 108 109 110 111 112 113 114 115 116 ... 139 140

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