272 Rockwell Automation Publication 1769-UM021I-EN-P - May 2018
Chapter 10 Develop Applications
Programming Languages
The CompactLogix controller supports these programming languages, online,
and offline.
For information about programming in these languages, see the Logix5000
Controllers Common Procedures Programming Manual,
publication 1756-PM001
.
Table 35 - CompactLogix 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 can have to interpret 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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