104 Rockwell Automation Publication 1769-UM011H-EN-P - April 2012
Chapter 7 Develop Applications
Select a Programming
Language
The CompactLogix controller supports these programming languages, both
online and offline.
Table 27 - Programming Language Selection
Required Language Program
Ladder diagram (LD) Continuous or parallel execution of multiple operations (not sequenced)
Boolean or bit-based operations
Complex logical operations
Message and communication processing
Machine interlocking
Operations that service or maintenance personnel may have to interpret in order to troubleshoot the machine or process
Function block diagram (FBD) Continuous process and drive control
Loop control
Calculations in circuit flow
Sequential function chart (SFC) High-level management of multiple operations
Repetitive sequence of operations
Batch process
Motion control using structured text
State machine operations
Structured text (ST) Complex mathematical operations
Specialized array or table loop processing
ASCII string handling or protocol processing
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