ProSoft Technology MVI56E-DNPNET - 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
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.
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
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 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.