II - DCE FEL ČVUT v Praze

Glossary
A
AS
ATEX 100a
B
Backplane bus
Backplane bus,
active
Bus
Bus node
I/O Modules with Intrinsically-Safe Signals
C79000-G7076-C152-04
Programmable logic controller (PLC)
AT for atmosphere, EX for explosive. The suffix 100a refers to the legal basis,
article 100a of the EEC agreement.
The backplane bus is a serial data bus which enables the modules to
communicate with one another and which supplies them with the required
power. The modules are connected together by means of bus connectors.
The I/O bus is part of the backplane bus.
Backplane bus of the distributed I/O ET 200M which is constructed from
active bus modules. This is the precondition for a structure in which the use
“Insert and Remove” modules is allowed.
Baud rates between 9.6 kbaud and 12 Mbaud are possible for the ET 200.
Common transmission path to which all devices are connected; it has two
defined ends.
The bus used for the ET 200 is either a two-wire cable or an optical fiber
cable.
A device that can send, receive or amplify data via the bus, for example,
DP master, DP slave, RS 485 repeater, or an active star coupler.
Glossary-1