UCOS Command Window Faceplates

UCOS command window faceplates provide direct access to monitoring and controlling an individual device.

Command windows allow you to change the value of set points and process variables, switch between automatic and manual control, and view the current status of set points, process variables, alarms, and tags — depending on the type of device. The ability to send commands and change values is subject to security measures.

Details

Larger Image (34K)

Right-clicking an appropriately configured device on a project graphics screen displays a command window for that device.

Larger Image (18K)

Command windows can also be grouped together so that related command windows can be displayed with one click. Group displays can also be summoned by selecting their name in a dialog box. Up to 10 command windows can be viewed in each group display.

Whether alone or in a group display, command windows are displayed in partial view by default. They can easily be expanded to show additional tags associated with the device.

User-Defined Devices

The command window for a user-defined device can display tag sets, trends, and/or up to 10 command buttons that can be specified by the developer.

Clicking one of the buttons momentarily sets the tag associated with that button. If that tag is used as an input in any logic scheme, then that logic is solved as a result of the tag being set. (You can require that the operator confirm selected commands prior to execution of the command. Also, commands are subject to security measures.)

Larger Image (17K)

Double-clicking one of the setpoint tags (HiDisOrd) displays a dialog box (Set Value) which allows the operator to enter a value to be sent to that tag.

Controllers

Larger Image (19K)

Command windows for controllers display the current setpoint and process variable values of the device as side-by-side bar graphs. An output bar graph shows the current operating level of the device output on a user-defined scale. The scroll arrows to the left of the Output graph increase or decrease the output by user-defined amounts when in manual mode.

The Setpoint button allows an operator to enter new set points for the control loop. The Auto/Man button allows an operator to control the output value automatically (using a standard PID algorithm) or manually. In manual mode, the Output button allows the operator to enter a value for the output. The Dir/Rev button allows the operator to select direct or reverse acting mode.

A trend displays the process variable.

For fully automatic loop tuning, see information on the UCOS AutoTune utility.

Transmitters

Larger Image (8K)

The transmitter command window displays the current value of the device as a number and as a bar graph. The raw value for the device is displayed as a percentage; a setpoint tag set displays all setpoint values.