Overview of Structured Text Programming 
 
654  Rockwell Automation Publication MOTION-RM002H-EN-P-February 2018 
Description 
The syntax is described in the table. 
 
The following diagrams show how a FOR_DO loop executes and how an EXIT 
statement leaves the loop early. 
 
 
The FOR_DO loop executes a specific number of times.  To stop the loop before the count reaches the last value, use an EXIT 
statement. 
 
Affects Math Status Flags 
No 
Major/Minor Faults 
A major fault will occur if  Fault type  Fault code 
The construct loops too long.  6  1