beautypg.com

Jump-loops – Watlow Series 96 User Manual

Page 58

background image

NOTE: For more information about how parameter settings affect the controller’s operation, see Chapter Five, Features.

Jump-loops

The Series 96 can jump forward or backwards at any step. You cannot jump-loop to the step that you are on.

7 . 6

R a m p i n g

Wa t l o w S e r i e s 9 6

Example:

Step 1

[StPt] Set Point Step

Step 2

[StPt] Set Point Step

Step 3

[SoaH] Soak Step

Step 4

[StPt] Set Point Step

Step 5

[``jl] Jump-loop

[``jf] = 1 [``js] = 2

[``jC] = 1

Step 6

[`end] 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]

End step

(Step 6) will be executed and the program will end.

Your

[``jC]

Jump Count can be any number from 0 to 255. If you enter 0, this will be an infinite loop and

never progresses to Step 6.

When

[``jF]

Jump File is not set to the current program file, the profile may jump to any step of the other

file.

There are two wait-for functions. The first is

[`we]

Wait-for Event. The profile will wait-for the
programmed event input condition to occur. The
desired event condition is programmed by the

[e`Cn]

parameter. If the

[`we]

parameter is set to

[`Off]

the function will be ignored.

The second wait-for function is

[wde]

Wait-for

Process Deviation Value. If a value is entered for
this prompt, the profile will wait at this step until
the desired process value is equal to or within the

[wde]

Wait-for Process Deviation Value band. Even

though only one numeric number is programmed to
wait-for, this absolute number represents both a
positive and negative window around the desired
process value.

Both wait-for functions (if enabled) must be satisfied
before the time entered in the

[sOaH] Soak

step will

begin to decrement. Once the wait-for condition has
been satisfied, the soak step time will continue to
decrement regardless of event input or process
changes during the remainder of the profile step.

In addition to being able to set the event input as a

[`we]

Wait-for Event, the event input can also be

programmed to pause a running profile, start a
profile, hold a profile, or abort a profile.

If the event input is set to

[paus]

Pause a profile,

satisfying the event input condition will toggle the
profile between hold and resume.

If the event input is set to

[hold]

Hold, the profile

will end when the event input condition is satisfied.
The controller will return to the non-ramping mode
and will continue to control the outputs by holding
the last active profile step set point and event
output settings.

If the event input is set to

[fil1]

or

[fil2]

, Profile 1

or Profile 2, the control will begin running the
designated profile number selected when the event
input condition has been satisfied if a profile is not
currently running. This will begin at step 1.

If the event input is set to

[absp]

Abort Set Point,

the profile will end when the event input condition
is satisfied. The controller will return to the non-
ramping mode and continue to operate by using the
set point value programmed at the

[absp]

parameter. The event output settings will remain in
the same state as the profile step settings when the
profile was aborted.

The Wait-for Functions of the Soak Step

Event Input Functions