User guide

Watlow EZ-ZONE
®
PM PID Controller • 30 • 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 Diagnostic Menu [diag] (Factory Page). The listing in the
table that follows is what one may typically find in the Home Page as defaults based on controller part num-
bers. It is important 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 Cool Power [C;pr1] will not appear unless the Cool al-
gorithm [`C;ag] is turned on in the Setup Page under the Loop menu. The Display Pairs [d;prs] prompt will
default to 1, therefore the upper display will reflect the Active Process Value [aC;pu] and the lower display
will reflect the Active Set Point [aC;sp] by default.
As stated above, the user can define pairs of prompts to appear on the display every time the Advance
‰
key is pushed. When configuring the Custom Menu to your liking it should be noted that if 2 changeable
(writable) prompts are displayed in a pair, i.e., Control Mode on top and Idle Set Point on the bottom, only the
lower display (Idle Set Point) can be changed. If a writable value is placed on the upper display and is paired
with another read only parameter on the lower display, the arrow keys affect the setting of the upper display.
The display can be configured to scroll by going to the Factory Page under the Diagnostic Menu and
changing the Display Time [`d ;ti] prompt to something greater than 0. If set to 2, the display will scroll
every 2 seconds from one Display Pair to another. If the Display Pair prompt [d;prs] is set to 1 the Display
Time [`d ; ti] prompt will have no effect on the display.