ProSoft Technology MVI69-DFNT - Manual (Page 95)

MVI69-DFNT ♦ CompactLogix or MicroLogix Platform Reference
EtherNet/IP Client/Server Communication Module User Manual
ProSoft Technology, Inc. Page 95 of 167
May 14, 2014
Output Data Initialization Request Blocks (1000 to 1066)
When the module performs a restart operation, it requests output data from the
processor to initialize the module’s read data area. Use the Initialize Output
Data parameter in the configuration file to bring the module to a known state after
a restart operation. The structure of the block used to request the data is shown
in the following table.
Block Request
Offset Description Length
0 1000 to 1066 1
1 1000 to 1066 1
2 to n Not used 62
The command control value of 1000 is moved as the Block Transfer Write ID to
indicate that the module is requesting initialization of the Read Data area. Ladder
logic in the processor must recognize this command and place the correct
information in the database. The format of the returned write block is shown in
the following table.
Block Response
Offset Description Length
0 1000 to 1066 1
1 to n Data to place in database n
For example, for a Read Data Area of 2 blocks (120 words), blocks 1000 and
1001 would be used.