Operator Terminal System Manual - 11276916.pdf

I
Programming
7 Graphic display and control
0
7.4 Graphic display and control
This chapter is not applicable to DOP11A-10.
This chapter lists all graphic objects in tables and explains each graphic object. This
chapter only applies to terminals that support graphic display.
General parameters
Colors Color terminals can display objects and bitmap graphics with 256 colors.
The use of colors allows for creating more realistic objects with 3D effect and shading.
Apart from the background and foreground colors for a block, you can select colors for
scales, curves, etc. in graphic objects.
The colors for background, text and windows are defined when configuring the terminal.
Colors for axes and curves in graphic objects can also be defined.
Engineering units scaling
Calculating technical units
The parameters offset and gain are used to scale the register value to a display value
according to the following equation.
Display value = Offset + gain*register value
If you change a value for an object via the terminal, the display value will be scaled
according to the following equation:
Register value = (display value-offset)/gain
The scaling neither affects the defined maximum/minimum values nor the number of
decimal places.
The functions for incrementing and decrementing affect the register value for the
maneuverable object but not the display value.
The function [Offset Gain Calculation] serves to calculate the parameters offset und
gain. Enter the values for offset and gain of the object under the tab [General] and click
118 System Manual – DOP11A Operator Terminals