ProSoft Technology MVI69-DNP - Manual (Page 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.
1 Next write block ID
number This field contains the ID number of the next
write block.