Micromod Micro-DCI: 53MC5000 Multi-Loop Process Controller Instruction Manual - Manual (Page 114)

4.0 OPERATOR DISPLAYS
Standard displays are provided by the 53MC5000 Process Control Station (controller) and additional
displays can be designed using F-TRAN if the controller has extended functionality. Typical display
types are point, parameter, summary, status, and totalizer. There is one unique display, called the
Locator Grid, which is not common to any one of these types.
Point displays are bar graphs with setpoint indicators and alphanumeric tags. Some bar graph point
displays also have horizontal trend lines. Parameter module displays each provide expedient access
to view or alter three datapoint values in operator/control mode. There is only one summary display
which shows the alarm state of six module tagnames and one system status display which has
alphanumeric descriptors followed by numeric values. Another status display type, the status
module displays, can have configured operation (e.g., open/closed) and alarm indicator legends.
Totalizer displays have the simplest presentation that shows the current accumulated value.
A display list is generated from the standard displays when the active control strategy (CS) is loaded.
Loading a control strategy automatically configures the appropriate CON module Control Display
Mode (CDM0-3) datapoints (B339, B334, B349, and B354) with values from 0 to 5 to identify the type
of point displays in the display list (e.g., standard PID, indicator, manual loader, etc.). Which display
appears on the front panel from the display list is determined by the contents of the Display Program
datapoint B005. Should the Display Program datapoint be set to a value having no corresponding
display program, then a
NO DISPLAY message appears on the front panel. Two exceptions that will
prevent a valid selected display from appearing are FIX 0 (company logo) or FIX 97 (Display Test)
active.
The controller Flexible Control Strategy (FCS) has a display handler that provides a convenient
method for an operator to page through the display list of a loaded control strategy. The FCS display
handler is also available as a function block or subroutine to F-CIM and F-TRAN programs. As part
of FCS, the display handler is automatically configured when a control strategy is loaded. The
display handler allows the display list to be accessed using the F1 and F2 push buttons. Pressing
the F1 or F2 push button causes the Display Program datapoint B005 to be configured with the next
display program value from the display list for that control strategy. The display handler can be
configured for a simple display list or a hierarchical display list. When configured for a simple display
list, pressing the F2 push button pages forward through the list and pressing the F1 push button
pages backward through the list. If configured for a hierarchical display list, pressing the F1 push
button pages to the next display group and pressing the F2 push button pages through the displays
within a selected group.
In addition to sequencing through the display list, pressing the F1 and F2 push buttons will indicate
the relative position of the currently selected display on the Locator Grid. After a display is selected,
waiting a short period of time and then pressing either the F1 or F2 push buttons causes the display
Locator Grid to appear. Releasing the F1 or F2 push buttons causes the displayed Locator Grid to
disappear and the interrupted display to reappear on the screen. Pressing the F1 or F2 push buttons
once again will sequence through the displays as described earlier. When invoked with the F1 or F2
push buttons, the display Locator Grid for a single display list appears as a single line of cells with
the selected display cell highlighted. For hierarchical display lists, the display Locator Grid appears
as multiple columns of cells with the selected display cell highlighted. The Locator Grid can have 8
group lists (columns) with 8 displays (rows) each for a maximum of 64 cells.
Section 4. Operator Displays
4-1