ProSoft Technology inRax MVI69-101M User Manual page 89

Reference
As blocks are transferred between the module and the processor, each block
contains block identification codes that define the content or function of the block
of data transferred. The block identification codes used by the module are
displayed in the following table:
Block Range
-1
0
1 to 20
9901
9902
9903
9950
9970
9971
9998
9999
Blocks -1 and 0 transfer status data from the module to the processor and they
contain no data when transferred from the processor to the module. Blocks 1 to
20 are utilized to transfer data stored or to be stored in the module's database.
These data blocks send data from module to the processor (monitored data
received from the devices on the serial network) and to send data from the
processor to the module (control data to send to the end devices). Block
identification codes 9901 to 9999 are used for special control blocks to control
the module. Each of these blocks are discussed in the following topics.
Command Control Blocks
Block identification codes greater than 9900 are utilized to perform special
functions in the module. Each control block recognized and used by the module
is defined in the following topics.
User Constructed Command Block (9901)
Block identification code 9901 issues one or more user constructed commands.
When the module receives a block 9901 identification code, it will place the
included commands into the command queue.
Word Offset in Block
0
1
2 to 7
8 to 13
14 to 19
ProSoft Technology, Inc.
February 4, 2008
MVI69-101M ♦ CompactLogix or MicroLogix Platform
Descriptions
Null block
Null block
Read or write data
User Constructed Command
Command Control Block (Add command to Command List Queue)
Event Messages from Master port
Command List Error data
Set PLC time using module's time
Set module's time using PLC time
Warm Boot Request from PLC (Block contains no data)
Cold Boot Request from PLC (Block contains no data)
Data Field(s) Description
Block ID This field contains the block identification code of
9901 for the block.
Command This field defines the number of user commands
Count contained in the block. The valid range for the field is
1 to 10.
Command #1 Data required to build the user defined command in
the command queue.
Command #2 Data required to build the user defined command in
the command queue.
Command #3 Data required to build the user defined command in
the command queue.
IEC 60870-5-101 Master Communication Module
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