ProSoft Technology MVI94-DNP - Manual (Page 85)

MVI94-DNP ♦ Flex I/O Reference
DNP 3.0 Server over Ethernet Communication Module User Manual
ProSoft Technology, Inc. Page 85 of 131
December 17, 2010
Command Control Block (Block 9902)
The Command Control Block places commands in the command list in the
command queue. Commands in the command list need not have their enable bit
set and can be executed using this block. The structure of the block built by the
processor for the module is shown in the following table.
Word Offset in
Block Data Field(s) Description
0 Block ID This field contains the value of 9902 identifying the
enable command to the module.
1 Command count This field contains the number of commands to enable in
the command list. Valid values for this field are 1 to 5.
2 to 6 Command Numbers
to enable
These 5 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.
When the module receives the block, it places the commands represented in the
block in the command queue until it is full. These commands will execute at a
high priority. The module does not send a response block back to the processor
for this command block.
Slave IED Unit Errors (Block 9949)
This command block is used by the processor to request slave status information
for a specific IED unit. The format of the block constructed by the processor is
shown in the following table.
Word Offset in
Block Data Field(s) Description
0 Block ID This field contains the value of 9949 identifying the block
type to the module.
2 Slave Index This parameter sets the index in the slave array to
consider. The first slave in the array has a value of 0. The
last index in the array has a value of MaxSlaves -1.
3 to 6 Spare Not Used