Rockwell Automation 1772-LP3 PLC - 2/30 Programmable Controller Programming and Operations Manual - Manual (Page 51)

Data Table
Chapter 3
3Ć24
Figure 3.8
Example of Data Table Word Map
FROM (32 WORDS) TO
WORD
ADDRESS
WORD
ADDRESS
000
040
100
140
200
240 037
077
137
177
237
277
300
Out-
puts
Storage Storage Block Xfer
Not
Used
Inputs Storage Block Xfer
Files
Timer/Counter AC Values Storage
Timer/Counter PR Values Storage
This form can be used to log the bit status of a word and to describe the
function of groups of related words within a 128–word data table section.
In particular, it can be used to log initial conditions of files such as those
used for recipes, and to log assigned storage bits.
The lower two digits of the 3-, 4- or 5-digit word address are prenumbered
in the left-hand column. The bit numbers, 00-17, complete the 5-, 6- or
7-digit bit address. The starting word address can be written once for the
entire 64-word column.
For example, Figure 3.9 shows a completed portion of the data table map.
The left-hand column represents the addresses 200/00 through 277/17
because a 2 is written in the starting word address box at the top of the
column. Two 4-word files are illustrated. The data of the File-to-File move
instruction, FFM062, is entered in binary. The data of the File-to-File
move instruction, FFM063, is entered in hex.
3.4.2
Data Table Map (128 Word)