File diagnostic instruction chapter 4 – Rockwell Automation 1772-AF3,D17726.5.2 User Manual AUX FUNCT PROM User Manual
Page 20
File Diagnostic Instruction
Chapter 4
4Ć3
Figure 4.3
Example User Entered Data (Binary)
Word
Location
0500
0501
0502
0503
Bit Location
17
16
15
14
13
12
11
10
07
06
05
04
03
02
01
00
Not Used
0
0
0
0
0
0
0
1
0
0
0
0
File Length = 10
words
Available
Storage
0
1
0
1
0
0
1
0
0
0
1
1
0
0
0
0
0
0
0
0
0
0
0
0
Address of actual value
file, lower 3 digits
upper 3 digits
Address of reference
Description
0
1
0
1
0
0
0
0
0
1
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0504
for bit
file, lower 3 digits
upper 3 digits
You can also load these values in BCD. You can load BCD values into an
instruction by means of a file-to-file move instruction. Enter a file-to-file move
instruction below the file diagnostic instruction. Open the rung by inserting a
branch end instruction at the beginning of the rung (Figure 4.4). Make the
address of the source file, file A, of the file-to-file move instruction the same as
the data address of the file diagnostic instruction. Press the key sequence
[DISPLAY] 1. Then load data into the word identified by the cursor. When
you load data into file A of the file-to-file move instruction, the data is
automatically loaded into the file diagnostic instruction. The open branch
allows you to load data, but prevents operation of the file-to-file move
instruction when you switch the processor to run mode.
Figure 4.4
Example Rung for Loading Instruction
EN
DN
030
17
030
15
Branch
End
Execute Aux
Function
Function Number:
Data Addr:
Result Addr:
20
0500
0520
FileĆToĆFile Move
Counter Addr:
Position:
File Length:
File A:
File R:
Rate Per Scan
030
001
015
0500 Ć 0516
0600 Ć 0616
015