166 Rockwell Automation Publication 1756-UM001M-EN-P - February 2012
Chapter 10 Develop Applications
Programming Languages
The ControlLogix controller supports these programming languages, both
online and offline.
For information about programming in these languages, see the Logix5000
Controllers Common Procedures Programming Manual, publication
1756-PM001
.
Table 42 - ControlLogix Controller Programming Languages
Language Is best-used in programs with
Relay ladder 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 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 Complex mathematical operations
Specialized array or table loop processing
ASCII string handling or protocol processing
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