Glossary
Glossary-6
ET 200S Distributed I/O System
EWA-4NEB 780602402-12
Process-related modules
Modules that are equipped with technological functions, such as counting pulses,
positioning, and controlling stepping motor power units.
PROFIBUS
PROcess FIeld BUS, process and field-bus standard, which is defined in
IEC 61784-1:2002 Ed1 CP 3/1. It defines the functional, electrical and mechanical
properties for a bit-serial field-bus system.
PROFIBUS is available with the protocols DP (which stands for distributed
peripherals, that is, distributed or remote I/O), FMS (which stands for field bus
message specification), PA (= process automation), or TF (= technology functions).
PROFIBUS address
Each bus node must receive a PROFIBUS address to identify it uniquely on the
PROFIBUS.
The PC/programming device has the PROFIBUS address “0”.
The PROFIBUS addresses 1 to 125 are permitted for the ET 200S distributed I/O
system.
PROFINET
In the field of Totally Integrated Automation (TIA) PROFINET is the logical
extension of:
• PROFIBUS DP, the established field bus, and
• Industrial Ethernet, the communications bus for the cell level.
The experience from both systems have been are are being integrated in
PROFINET.
PROFINET, as an Ethernet-based automation standard of PROFIBUS
International (formerly PROFIBUS Nutzerorganisation e.V. [user organization]),
defines a manufacturer-independent communication, automation and engineering
model.
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