Topic: DMD0073

PUBLISH - Translate from Do-more

The Translate from Do-more instruction (PUBLISH) copies and converts ranges of data from Do-more memory to a data format that is directly usable by an external source, for example: converting memory to BCD data that will be used by a DirectLOGIC controller, or byte-swapping data that will be used by a Modbus device.

The Translate from Do-more instruction can have from 1 to 50 rows of data blocks to convert. For each of the rows, this instruction will copy each of the Elements from the Source block to the Destination block, converting each of them from the native data format of the Source block to the specified format.

There is no sequencing or stepping regarding the rows in this instruction, every row in the instruction is processed every time the instruction is executed.

Row Editor Keys:

The following functions are used to add or remove rows, edit existing rows or reorganize the rows in the instruction.

• Ok - closes the editor, saving any changes

• Cancel - closes the editor, discarding any changes
   

• Edit - brings up the editor for the currently selected row

• Insert - inserts a new row in the instruction before the currently selected row

• Remove - removes the currently selected row

• Move Up - moves the currently selected row up one row

• Move Down - moves the currently selected row down one row

Parameters:

Note: Use the F9 key (Element Browser) or Down-Arrow key (Auto-Complete) at any time to see a complete list of the memory locations that are valid in the current field of the instruction.

Source - designates the beginning address of the data block to be copied and converted. This can be any readable numeric location.

Destination - designates the beginning address of the block to store the converted data. This can be any writable numeric location.

As - designates the type of format conversion to be applied to each element in the Source block as they are copied to the Destination block.
 

#Elements - designates the number of Source locations to convert. This can be any constant value between 1 and 255.

Reverse Bytes - checking this option will cause the Bytes of each Source Word or DWord to be swapped before the data conversion operation is applied.

Status Display:

The status display of the PUBLISH instruction is a textual description of the data conversion.

See Also:

• PUBLISH - Transport from Do-more

• SUBSCRIB - Translate to Do-more

Rung Example:

The following table shows how the PUBLISH instruction manipulates the data in the above example using various values: