Bradley Smoker PLC-5 Select Which Group of Data You Want to Force, 13-6Programming Considerations

13-6Programming Considerations

Step 1 - Select Which Group of Data You Want to Force

IMPORTANT

Group the data in the extended force configuration table so that you separate read date from write data. If you do not separate read and write data, you encounter error code -3 if:

•program a BTW instruction using a data file that you configured in the extended force configuration table as a read application

•program a BTR instruction using a data file that you configured in the extended force configuration table as a write application

You also encounter this error if you try to transfer block-transfer data that crosses the forcible range you configured in the extended force configuration table.

When you select the group of data you want to force, you must select and configure data that corresponds to an entire “chunk” or multiple “chunks” of block-transfer data. For example:

You want to force some data associated with block-transfer read #2 and with block-transfer read #4. To select the data, you could:

•	Select all of data file N11	Word
• Select N11 beginning at word 20 for 60 words (i.e., beginning at the start		0
	of BTR #2 and ending at the end of BTR #4)
•	Make two selections, one beginning at the start of BTR #2 with the size	20
	of BTR #2 (N11:20 for 12 words), and one beginning at the start of BTR

#4 with the size of BTR #4 (N11:55 for 25 words).

32

55

80

Data Table File N11

BTR #1

BTR #2

BTR #3

BTR #4

Publication 1785-UM012D-EN-P - July 2005