2-1
ET 200X Distributed I/O Device
EWA 4NEB 780601602-06
Configuration Options
Configuration options
There are several different ways in which ET 200X distributed I/O devices can be
connected to PROFIBUS-DP. This chapter provides an overview of the various
configuration options. The restrictions regarding the maximum number of modules
allowed in each configuration are described in a separate section.
Contents of Chapter
Section Subject Page
2.1 Brief overview of the different basic modules 2-2
2.2 Feeding and looping through the supply voltage for the electronic
components/sensors and PROFIBUS-DP
2-3
2.3 Disconnecting the ET 200X from the bus and looping through the
supply voltage/PROFIBUS-DP (not ET 200X-DESINA/
ET 200X-ECOFAST)
2-6
2.4 Connecting the load supply voltage to the motor starters, frequency
converters and looping it through
2-8
2.5 Connecting and looping through the load voltage 2-10
2.6 Use of the SITOP power power supply unit 2-11
2.7 Connecting and looping through load voltages and PROFIBUS-DP to
ET 200X-DESINA / ET 200X-ECOFAST
2-12
2.8 Restrictions on the number of modules 2-13
2.9 Maximum configuration and configuration options with power modules 2-16
Modules for the ET 200X
This chapter does not contain any further information about the types of module
that can be used for the ET 200X. Please refer to Chapter 7 for the technical
specifications, pinouts, basic circuit diagrams, etc.
Terminating resistor
There must be a terminating resistor on the first and last node of a PROFIBUS-DP
network with copper conductors (see Section 3.4).
The ET 200X-DESINA FO has a fiber-optic waveguide to transmit bus signals.
This waveguide does not require a terminating resistor.
2
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