Prosoft-technology MVI69-DNP Manual de usuario descargar pdf (Pagina 78)

MVI69-DNP ♦ CompactLogix or MicroLogix Platform Reference

DNP 3.0 Master/Slave Communication Module

Page 78 of 129 ProSoft Technology, Inc.

November 3, 2008

The following fields are used for each 10-word record in the command list:

Word Offset Definitions Description

0 Port/Flags

This field is currently ignored as all 9901 blocks

are sent immediately out the master port.

1 Slave Address

This is the IED node address for the slave to

consider on the network.

2 Object Object type always 12

3 Variation Variation always 1

4 Function

Function codes 3, 5 and 6 supported. Function

code 4 is automatically sent after a successful

function 3.

5 Address in Slave Point in IED to consider with the CROB.

6 Control Code

This is a standard DNP protocol control code byte

(see description below).

7 Pulse Count

This parameter specifies the number of pulses to

generate for pulse output control. This parameter

has a range of 0 to 255 as the value is a byte

parameter in the CROB. If a value of zero is

entered, the operation will not execute.

8 Pulse On Time

This parameter specifies the on-time interval for

pulse control.

9 Pulse Off Time

This parameter specifies the off-time interval for

pulse control.

The control code in the command is a bit coded byte value with the following

definition:

Bits Definitions Description

0 to 3 Code

These bits determine the control operation to be

performed by the command: 0=No operation,

1=Pulse on, 2=Pulse off, 3=Latch on and 4=Latch

off. All other values are undefined in the DNP

protocol.

4 Queue

0=Normal (execute once), 1=Requeue (place at

end of queue after operation).

5 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.

Block Format for Read

Word Offset in Block Data Field(s) Description

0 Block ID

This field contains the block identification code

of 9901 for the block.

Next write block ID

number

This field contains the ID number of the next

write block.

1 2 ... 73 74 75 76 77 78 79 80 81 82 83 ... 128 129

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