Watlow Series 982 - Manual (Page 102)

7.8 WATLOW Series 982 User’s Manual
Programming, Chapter 7
Sample Program
The Series 981/982 can only jump backwards within the same profile if
JF equals the current program profile. A jump forces you to a step
already performed. The Jump Step (JS) must be less than the current
step. You cannot jump-loop to the step that you are on.
Example:
Step 1 StPt Step
Step 2 StPt Step
Step 3 Soak Step
Step 4 StPt Step
Step 5 Jump-loop JS - 2 JC - 1
Step 6 End
In this example the program will execute steps 2 through 4 a total of 2
times. This includes the initial pass and the pass associated with the
Jump Count of 1 (JC - 1). Following the second pass the End step (Step
6) will be executed and the program will end.
Your Jump Count (JC) can be anything from 0 to 255. If you enter 0,
this will be an infinite loop and never progresses to Step 6.
When Jump File is not set to the current program step, the profile may
jump to any step of another file. In this example Jump File enables the
profile to jump between two files.
Programming a Ramping Profile
This is a sample program. Depending on your application and parameter
settings, your system may not respond like this.
Our first step in programming is to make a short ramp and soak profile.
Step 1 initializes the set point to a known starting point for the ramp,
Step 2 is a short ramp, and Step 3 is a soak step, which holds the pro-
grammed set point constant for the programmed time. Step 4 is an end
step signaling the end of the profile.
1. Enter the Operation menu by pressing the Mode key until OPEr
appears in the lower display. Use the Up or Down key to select Prog in
Step: 1 ➝2➝3➝4 5 6 1 2 3➝4➝5 6 1 2➝3➝4 5 6 1 2 3➝4➝5 6 1 2➝3➝4➝5➝6 1 2 3 4 5 6
JF: 2 1 2 1 2 1
JS: 3 2 3 2 3 2
JC: 2 2 2 2 2 2
file 1 file 2 file 1 file 2 file 1 file 2
first pass second pass last pass
Figure 7.8 -
Using Jump File.