Allen-Bradley Logix5000 Reference Manual page 493

If you want to
Compare data against a known, good reference and
record any mismatches
Compare data against a known, good reference,
record any mismatches, and update the reference to
match the source
Pass the source data through a mask and compare
the result to reference data. Then write the source
into the reference for the next comparison
Control a PID loop
Special Instructions
(FBC, DDT, DTR, PID)
Topic
File Bit Comparison (FBC)
Diagnostic Detect (DDT)
Data Transitional (DTR)
Proportional Integral Derivative (PID)
Configure a PID Instruction
Use PID Instructions
PID Theory
The special instructions perform application-specific operations.
Use this instruction
FBC
DDT
DTR
PID
Rockwell Automation Publication 1756-RM003N-EN-P - October 2011
Page
494
501
508
511
516
518
530
Available in these languages
Relay ladder
Relay ladder
Relay ladder
Relay ladder
Structured text
13
Chapter
Page
494
501
508
511
493