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8
CONTROLS AND FUNCTIONS
Using the Local Interface Display —
The Local
Interface Device (LID) is a CCN operator interface that gives
the user the capability to view and modify all configuration and
service data for the CC6400 control system. The LID also
allows the user to override all point display and maintenance
data.
MENU STRUCTURE — The LID operates on a hierarchy of
four levels (menus).
The top level contains the LID’s major functions. Each
function has a corresponding key on the LID. For an explana-
tion of each function key, refer to Table 3.
The second level separates the major functions (items) into
types with corresponding type numbers that can be used for
quick access.
The third level gives the user the capability to access each
occurrence of an item. For example, the application may
require two DO (Discreet Output) — Analog Comparison
algorithms. Thus, the CC6400 Controller would have two
occurrences of the DO — Analog Comparison algorithm.
The fourth level gives the user the capability to access main-
tenance and configuration data associated with the selected
occurrence of the item.
DEFAULT SCREEN — Figure 5 shows the LID. The LID’s
screen provides the user with the 24-character controller name
and the controller’s current time, date, and alarm status. This
screen appears when the LID is powered up and communicat-
ing with the controller or there is no keyboard activity for
10 minutes.
KEYPAD AND DISPLAY — The LID consists of a keypad
with 8 function keys, 4 operative keys, 12 numeric keys (0 to
9,., and -) and a two-line, alphanumeric liquid crystal display
(LCD). Each line on the LCD can display up to 24 characters.
See Fig. 5. Table 4 defines the purpose of the LID’s operative
keys. Table 5 defines the purpose of the LID’s numeric keys.
Table 3 — LID Function Keys
LEGEND
Table 4 — Operative Keys
Table 5 — Numeric Keys
VIEWING MODES — The user can view items in either the
Status (maintenance) mode or the Edit (configuration) mode.
Status Mode
— When the user first powers up the LID, it
displays the CC6400 controller items in Status (maintenance)
mode. The user may view the current value or status of an item
in Status mode without actually logging on to the Controller.
Knowing the current values or status of items can be useful
when troubleshooting. For example, the user could determine
if a point was forced.
NOTE: Not all items have maintenance data. If the item you
select does not have maintenance data, the LID will display
“No maintenance.”
Accessing Items in Status Mode
— The user can access
maintenance data in Status mode in two ways:
• Pressing the appropriate function key (i.e., )
once to access a category (i.e., alarms) and then continu-
ing to press that key ( ) to scroll through all the
items in that category (i.e., Limit Alarm, Set point
Alarm, Discrete Alarm, First Out Alarm, Runtime
Alarm, and Number of Starts Alarm). Press to
display the first maintenance decision.
NOTE: Scrolling by repeatedly pressing the function key
displays the name of all the items in that category, whether
or not they are actually configured. Scrolling by pressing
the up or down arrow displays only the configured items
within that category.
OPERATIVE
KEYS
USE
Status — gives access to maintenance
values and configuration data for points.
Alarm — gives access to maintenance
and configuration data for alarms.
History — gives access to maintenance
and configuration data for history system
functions.
Service — gives access to maintenance
and configuration data for service system
functions.
Setup — gives access to configuration
data for setup system functions.
Schedule — gives access to maintenance
and configuration data for schedules.
Algorithm — gives access to maintenance
and configuration data for AO, DO, and global
algorithms. It also gives access to BEST
++™
custom programs.
Edit — gives the capability to switch from
Status mode to Edit (configuration) mode for
the selected item.
AO — Analog Output
DO — Digital/Discreet Output
OPERATIVE
KEYS
USE
Clear — performs three operations:
• Cancels a data entry before the user
presses Enter, thus leaving the current
value unchanged.
• Returns a forced point to automatic
control.
• Redisplays the previous menu level.
Enter — performs two operations:
• Selects the displayed item, thus displaying
either its maintenance or configuration
data, depending on whether the user is in
the Status mode or the Edit mode.
• Accepts the value entered in a configuration
decision as new configuration data or as a
force.
Down arrow — displays the next configured
item or decision. When the last configured
item or decision is displayed, the LID
re-displays the first configured item or
decision. For example, when the user presses
the down arrow key while viewing the last
configuration decision of an algorithm, the LID
re-displays the first configuration decision.
Up arrow — Displays the previous configured
item or decision.
OPERATIVE
KEYS
USE
Numeric keys
Performs two operations:
• Separates items, such as an algorithm from
its occurrence or hours from minutes.
• Serves as a decimal point in numeric values.
Performs two operations:
• Negates the value of numeric keys.
• Clears current data entry value any time it is
not the first key pressed during the data
entry sequence.
CLEAR
ENTER
-
ALRM
ALRM
ENTER