semaphore TBOX LT2-530 Series, User Manual, Page: 78 / 197

Version : 1.09 78
9.2. Internal Variables (Registers)
An internal variable (also known as Register) is an addressable location of the memory. It is used as flag,
as temporary value, to make a calculation, …
There are 3 types of internal variables:

Digital (DIV) Boolean register with possible values: 0 or 1.

Analog (AIV) with several formats:

8 bits, Signed or Unsigned

16 bits, Signed or Unsigned

32 bits, Signed or Unsigned

32 bits Float, IEEE 754

TEXT (AIV) analog register associated to a string of characters
The internal variables can only be created from the list of Tags.
9.2.1. Digital Internal Variable
To create a Digital Internal Variable, from the list of Tags, click ‘Add a Tag’.
Select ‘Digital’:
The Definition menu pops up:
You type a Tag Name, a Comment and select as Type: ‘Internal Variable’