Rockwell Automation 1772-AF3,D17726.5.2 User Manual AUX FUNCT PROM - Manual (Page 22)

File Diagnostic Instruction
Chapter 4
4Ć5
Figure 4.6
Example Map of File Locations
Word
Location
0505
0506
0521
Bit Location
17 16 15 14 13 12 11 10 07 06 05 04 03 02 01 00
0
Description
0507
Reference File
(10 words)
First word of Instruction File
Last Word of Result File
0516
0520
0522
0523
0524
0525
0534
1
Last Word of Reference File
First Word of Result File
First Word of Actual Value File
First Mismatch found at 0525/02
Last word of Actual Value File
•••
Result File
(3 words)
Actual Value File
(10 words)
Mismatch found
at 0525/02
••
•
Result Address - The result address is the second address that you entered into
the instruction block. It is the first word of the result file. The result file is
where the instruction momentarily stores the following information (0520-0522
in Figure 4.7):
First word - * Control bits 17-14
* Error count, 0 to 999 (BCD), bits 13-00
Second word - * Status of the bit in the file of actual values that did not
match, bit 17
* Instruction work area, bits 16-14 (Do not use these bits
for any purpose)
* Address of word containing the mismatch, upper 3
BCD digits, bits 13-00
Third word - * Address of word containing mismatch, lower 2 BCD
digits, bits 17-10
* Bit number in word containing mismatch, 2 BCD digits,
bits 07-00