ProSoft Technology inRax MVI69-101M User Manual page 90

MVI69-101M ♦ CompactLogix or MicroLogix Platform
IEC 60870-5-101 Master Communication Module
Word Offset in Block
20 to 25
26 to 31
32 to 37
38 to 43
44 to 49
50 to 55
56 to n
where n = 60, 120, or 240 depending on the Block Transfer Size parameter (refer
to the configuration file).
The following fields are used for each 6-word record in the command list:
Word Offset
0
1
2
3
4
5
Refer to the command list section of this documentation for a detailed definition
of the fields contained in this block. They are the same as those used in
constructed the commands in the command list.
There is no response block built by the module to send back to the processor
after the block is processed. The commands are placed in the command queue
and issued at a high priority.
This block and block 9902 should be used when controlling single-point, double-
point and regulating step data points in remote units. If the persistent output
qualifier is used in a command list, the command list can be utilized. For points
that are controlled using the short or long pulse or no definition given qualifier,
block 9901 should be used to control the output. For example, if the command
list controls a short pulse output for a single point using the enable code of 2, any
time the point's value in the database changes the command will be executed.
When the point changes to a value of 0, the short pulse off command will be
executed. When the point changes to a value of 1, the short pulse on command
will be executed. This may not be what is desired for the application. If block
9901 is utilized instead, the ladder logic can execute a short pulse on command
using a database point it that is set to 1.
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Data Field(s) Description
Command #4 Data required to build the user defined command in
the command queue.
Command #5 Data required to build the user defined command in
the command queue.
Command #6 Data required to build the user defined command in
the command queue.
Command #7 Data required to build the user defined command in
the command queue.
Command #8 Data required to build the user defined command in
the command queue.
Command #9 Data required to build the user defined command in
the command queue.
Spare Not used
Definitions Description
Database Index Address in module to associate with the command
Session Index Session index defined in the module to associate
with the command.
Sector Index Sector index for session as defined in the module.
Data Type ASDU data type associated with the command.
Point Index Information object address for the point on which
command operates.
Qualifier Qualifier as defined for the command parameter is
data type dependent. list. This
Reference
ProSoft Technology, Inc.
February 4, 2008