Siemens SIMATIC NET Manual de Serviço descarregar pdf (Página 31)

Glossary

Introduction to PROFIBUS on Industrial PC

C79000-G8976-C068

Glossary

Logical address of a module in S7 systems.

Bus parameters control the data transmission on the bus. Each ->

station on the -> PROFIBUS network must use bus parameters that

match those of other stations.

Part of a -> subnet. Subnets can consist of bus segments and

connectivity devices such as repeaters and bridges. Segments are

transparent for addressing.

Communication Function Block: A communication technique for

program-controlled transmission of data from or to a CPU in an S7-

300/400 using special function blocks. These function blocks were

defined based on the IEC 1131-5 draft. The communication partners

can be other modules with communication capabilities in an

S7-300/400, operator stations, PCs or other controllers and computers.

Communications Processor. Module for communication tasks.

Device master data (GSD) contain DP slave descriptions complying

with EN 50 170, Volume 2. Using device master data makes

configuration of the -> DP master and -> DP slaves easier.

Input and output modules used at a distance (distributed) from the CPU

(central processing unit of the controller). The connection between the

programmable controller and the distributed I/Os is established on ->

PROFIBUS. The programmable logic controllers do not recognize any

difference between these I/Os and local process inputs and outputs.

DP slaves have a modular design. A -> DP slave has at least one DP

I/O module.

The DP I/O type identifies a -> DP I/O module. The following types

exist:

Input module

Output module

Input/output module

A -> station with master functions in -> PROFIBUS DP. The DP master

controls the exchange of user data with the -> DP slaves assigned to it.

The DP module list contains the modules belonging to a -> DP slave.

You make entries in the DP module list when configuring a -> DP

master with -> COM PROFIBUS.

Name of a -> DP I/O module entered in the ->DP module list.

Base address

Bus parameters

Bus segment

CFB

Device master

data

Distributed I/Os

DP I/O module

DP I/O type

DP master

DP module list

DP module

name

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