semaphore TBOX LT2-530 Series, User Manual, Page: 56 / 197

Version : 1.09 56
8. Resources
The resources represent the list of the hardware that your
TB
OX
LT2
has to its disposal.
The
TB
OX
LT2
being an all-in-one RTU has a fixed hardware all built within one module:

A Power Supply

A CPU

Communication ports

Groups of I/O

If the CPU needs to communicate in ‘ModBus Master’ to another device (CPU, or an external
ModBus device), the latter must be declared as a Remote I/O card (see chapter 15: ‘ModBus
Transactions’)

The Resources also contain 2 lists with System variables. Systems variables have pre-defined
function (see chapter 8.5 ‘System variables’)
8.1. The CPU Card
When starting a new document, TWinSoft creates automatically the CPU card corresponding to the
selection in the wizard (see chapter 5.).
The communication ports of the CPU with their associated configuration and the I/O of the CPU are part
from the resources of the CPU:
The CPU card is divided in several groups:

Group 0 : communication ports

Group 1, 2, 3, … : different groups of I/O corresponding to the model of
TB
OX
LT2
. (See chapter
20.7. for more details about I/O).
8.2. Communication Ports
By selecting the Group 0
Communication ports in the
workspace, you access each
port separately.