semaphore TBOX LT2-530 Series, User Manual, Page: 75 / 197

Version : 1.09 75
9. Tags & Variables
A Tag is essential for any programming

An alarm is conditioned from a Tag.

The Datalogging mechanism records values of Tags.

BASIC/Ladder logic executes a process by handling Tags.

…
Any variable of the
TB
OX
LT2
that you want to use in any configuration has to be available
as a Tag.
There are 4 types of variables:

The Physical I/O DI, DO, AI, AO (See chapter 9.1)

The Internal Variables digital, analog and text (aka Registers) (See chapter 9.2)

The System Variables predefined analog and digital functions (See chapter 8.5)

The Communication Variables digital and analog (See chapter 8.3)
The Tags are gathered in the folder Tags of the Project Workspace:
The Tags can be sorted into Groups of Tags:
- From the list of Tags, right click.
- From the Context menu, select ‘New’ -> ‘Group’.
- You can then move/create Tags into the Group.
GROUPS OF TAGS