Specifications

Appendix A: Troubleshooting Blank Corner in HMI Display
VisiLogic: Getting Started 117
Notes
•
Although an imported image can be
resized, resizing may result in
some degree of distortion. To avoid this, use images that are created
to match the required size.
•
Resizing text elements changes the size of the text field, but does not
affect font size.
•
Shapes that are imported are
resized in proportion to their original
size.
Blank Corner in HMI Display
While you download an application, a flashing square or box is present in the
upper left-hand corner of the PLC display screen. When the PLC returns to Run
mode, you may note that a small square in the upper left-hand corner of the
screen is blank.
This is part of the normal download process. The screen will recover as soon as
the display is refreshed for any reason.
Float Errors
When an Float function error occurs, SB 10 Float Error turns on. This SB is
reset by the user.
The error code is stored in SI 440 General Error. The codes are shown below.
Value Message Result
3 Integer
Overflow
7FFF or 8000 (integer result)FFFF or 0000(unsigned integer result)
4 Floating
Overflow
+INF or -INF (float result)
5 Floating
Underflow
0.0 (float result)
7 Divide by
Zero
+INF or -INF or NaN (float result)
9 Undefined
Float
NAN (float result)
10 Conversion
Error
0 (integer result)
11 Floating point
Stack
Overflow
Floating point stack underflow
12 Floating point
Stack
Underflow
Floating point stack overflow
INF Infinite which is the largest absolute floating point number.
NAN Not a Number, special notation for undefined floating point number.
Changing Panel Types: Conflicts
If a project contains Displays, selecting a different panel type in your project's
Hardware Configuration may cause you to lose some of your Display elements
and their properties.