Watlow Series 920 Microprocessor-Based Ramping Control - Manual (Page 38)

The Four JUMPLOOP Types
The Series 920 gives you the capability to perform four basic jumploop types in
your programming. The backward jump, foward jump, nested loops, and
intertwining loops. These are only definitions of the four loops. The Series
920 has very few rules concerning loops in your program.
Backward Jump
The Backward jump is the most common jump. A backward jump will force
you to a step already performed. The Jump Step (JS) must be less than the
current step. You cannot JUMPLOOP to the step that you are on.
Step 2 SETPOINT
Step 3 SETPOINT
Step 4 SETPOINT
Step 5 JUMPLOOP JS - 02 JC-01
Step 6 STOP
The steps in sequence will be: 2,3,4,5,2,3,4,5,6.
Your Jump Count (JC) can be anything from 0 - 100. If you enter 0, this will be
an infinite looping and will never progress to Step 6.
Forward Jump
The next loop type is a Forward jump. By definition you can jump forward.
The Jump Step must be greater than this step.
Step 1 SETPOINT
Step 2 SETPOINT
Step 3 JUMPLOOP JS - 05 JC-01
Step 4 SETPOINT
Step 5 STOP
The steps in sequence will be: 1,2,3,5.
38 WATLOW Series 920 User’s Manual How To Program the Series 920, Chapter 6