Global variables

Global variables can be shared between all functions in a project. The Global instruction is used to declare a global variable.

To declare global variables in a program, use the Global instruction with the desired variable type (Boolean, Byte, UByte, Integer, Short, UShort, Long, Int32, UInt32, Int64, UInt64, Real, Double, String) at the beginning of the program before any Function statements:

Boolean, Byte, UByte, Integer, Short, UShort, Long, Int32, UInt32, Int64, UInt64, Real, Double, String

For details, see Data Types.

TIP

To indicate that variables are global, precede the name with “g_” as shown in the example below. With this, you can improve the program readability.

Program: MAIN.PRG

Global Integer g_TotalCycles
Function main
  Call LoadPart
  ...
  ...
Fend

Program: LOADPART.PRG

Function LoadPart
  Jump pick
  On gripper
  Wait .1
  Jump place
  Off gripper
  Wait .1
  g_TotalCycles = g_TotalCycles + 1
Fend

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