Integration into the User Program
4-16
C7-613 Control System
A5E00138934-03
4.3.8 Variable in Process Screens and Messages
Observe the following notes if you use variables in process screens or messages:
Note
If you define a variable that does not exist, the C7-613 switches to STOP mode
when this variable is accessed. To prevent this, you can include the corresponding
error OB (OB 121, OB 122, OB 85) in your user program.
Note
The fields variables must not overlap.
If the static text and the variables have the same position, the variable overwrites
the static text.
Note
If the field length you selected for your output field is too small for the value to be
represented, you will get the following representations:
• For binary, ASCII and Unicode formats, only the bits or characters which fit into
the variables field are displayed and they are right justified.
• For decimal and hexadecimal formats, the character # is output instead of the
value of the variables.
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