Allen-Bradley Logix5000 Reference Manual

498 Rockwell Automation Publication 1756-RM003N-EN-P - October 2011
Chapter 13 Special Instructions (FBC, DDT, DTR, PID)
Condition Relay Ladder Action
Examine
compare.EN bit.
Compare.EN = 1
Compare.EN = 0
Rung-condition-in is true.
Examine
compare.DN bit.
Compare.DN = 1
Compare.DN = 0
Compare EN bit is set.
Compare.ER bit is cleared.
Compare.FD bit is cleared.
Compare.LEN ≤ 0
Yes
No
Compare.POS < 0
Yes
No
Compare.ER bit is set.
Compare
page 499
End
Rung-condition-out is set
to true.
Goto
Exit
Exit
Goto
Exit
Goto
Exit

Allen-Bradley Logix5000 Specifications

General

Brand	Allen-Bradley
Model	Logix5000
Category	Controller
Language	English