Rockwell Automation 1772-AF3,D17726.5.2 User Manual AUX FUNCT PROM - Manual (Page 29)

Chapter
5
5Ć1
Programming Check List
Use the following check list as an aid when entering the file search or file
diagnostic instruction into your ladder diagram program.
1. Do you have the correct function number?
2. Is your data table large enough to hold all of your files?
3. Are your address values in octal (BCD 0-7)?
4. Have you made sure that the file of actual values and the file of reference
values do not overlap (file diagnostic instruction)?
5. Have you made sure that the match word address is not an address of the
instruction file (file search instruction)?
6. Have you entered a file length greater than zero but less than or equal to
999 (BCD) in the address file?
7. If you use the [SEARCH] 53 bit monitor mode to enter data, did you
correctly position each of the bits that you set?
8. Have you enabled the instruction using correct logic (false-to-true
transition of the enable bit), and correct enable bit address (bit 17 of the
result address)?
General