Pump (GS_PUMP)
It should be possible to switch between manual
operation and automatic operation for the pump P1. In the manual
operation it's possible to specify the rotation speed between
0...100 (in %) and to switch the pump on and off. The operating
state (running, stopped, rotation speed, manual operation) as
well as a possible alarm should be displayed for the user.
Fill level
sensor (GS_LEVEL)
The fill level sensor provides an absolute level
in meters. In addition to the automatic value range monitoring,
the user should also be alarmed in case of a too low or too high
fill level. Although the tank T1 and the reservoir T2 are designed
differently, the level can be measured identically.
Shut off valve
(GS_VALVE)
It should be possible to switch between manual
and automatic operation for the valves (slider). The commands
On/ Stop/
Off as well as a specification
of the opening level should be possible in the manual mode. The
valves should show the operating status (end
position open,
end position closed),
the current opening level in %, manual operation and a possible
alarm.
All commands
should be entered using own dialogs,
starting from the device symbol (two-stage operation). The properties
of these devices correspond approximate to the following simplified
measuring/message list.
The necessary information is repeated later by numerous step by
step instructions.
Figure: Simplified Device List
for the Exercise Example
The figures of the devices as well as their operation dialogs are modeled
as reusable objects in
WinCC OA. The
created process image should be included in a superior, flexible
configurable operation image.
In addition to the process image, a detailed image should show
the chronological sequence of the levels in T1 and T2 also graphically
(trend).
An overview image should
facilitate the navigation to the process image (tanks) as well
as to other further parts of the plant.
Figure: Chronological Sequence
of the Levels in a Trend
Figure: Overview Image with combined
Navigation and Sum Alarm Elements
CAUTION
Identifier in WinCC OA depend on the exact
notation including upper and
lower case (case sensitivity). This applies to data point (element)
names as well as variable identifiers or the names of graphic
objects (buttons, lines, ....). Consider that all names correspond
exactly to the notation specified here, since prepared application
parts are used later and these have to suitable for your objects/names.
Prepared Simulation
programs that can be simply included in the self created application,
enable a simple use with confirmations even without connection
to a real process.
NOTE
The complete configuration exercise project
is also available as the application GettingStarted_3.11 SP1. If necessary, you can reconstruct
some steps using the ready application or also adopt parts of
it. |