Watlow PM LEGACY™ Limit Controller
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Chapter 4 Home Page
Modifying the Display Pairs
The Home Page, being a customized list of as many as 20 parameters, can be configured in pairs of
up to 10 via the Display Pairs
d.prs
prompt found in the Global Menu
gLbL
(Setup Page). The listing
in the table that follows represents the Limit default Home page. It is im
portant to note that some
of the prompts shown may not appear simply because the feature is not being used or is turned off.
As an example, the prompt shown in position 3 (Limit Low Set Point,
LL.S1
) will not appear unless the
Limit Sides is set for low or both found on the Setup page under the Limit Menu.
Home Page Default Parameters
Custom Menu
Number
Home Page
Display
(Defaults)
Parameter Name
Custom Menu Display
(Defaults)
1 (Upper or left
display)
Numerical value
Active Process Value
Pro
2 (Lower or right
display)
safE
or
faiL
Limit Status
L.st
3
Numerical value
Low Limit Set Point
LL.51
4
Numerical value
High Limit Set Point
Lh.51
5 to 20
(skipped)
nonE
Note:
When the Limit is in a default state (as shipped from factory), the display will flash where the red
display will show the Process Value and the green display will flash
attn
and
FAIL
.
As stated above, the user can define ten pairs of prompts to appear on the display every time the
Advance key is pushed. In a default state, the Display Pairs
d.prs
prompt (Setup Page under the
Global Menu) is equal to one with the first pair displayed as is defined in the Home Page table above.
If the Display Pairs prompt were to be changed to two, pushing the Advance key one time would
cause the display to show the Low Limit Set Point on the top and the High Limit Set Point on the
bottom reflecting position 3 and 4 respectively.
Note:
Both of these parameters are writable and being paired in this manner only the High Limit Set Point
can be changed. Pairing two writable prompts will only allow for the bottom one to be changed. On
the other hand, if a writable value is placed on the red display and is paired with another read only
parameter on the green display, the arrow keys affect
the setting of the red display.
