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Glossary
ET 200iS Distributed I/O Station
A5E00087831-02
22-3
ET 200
The ET 200 distributed I/O station with the PROFIBUS-DP protocol allows
connection of the distributed I/O to a CPU or adequate DP master. One of the main
features of the ET 200 is it is fast reaction times since only a few data (bytes) is
transferred.
The ET 200 is based on the standard IEC 61158/ EN 50170, Volume 2,
PROFIBUS.
The ET 200 operates according to the master-slave principle. The DP master can,
for example, be the master interface module IM 308-C or the CPU 315-2 DP.
DP slaves can be the distributed I/O stations ET 200B, ET 200M, ET 200X, ET
200L, ET 200S, ET 200iS or DP slaves from Siemens or other vendors.
Floating
With floating input/output modules, the reference potentials of the control and load
circuit are electrically isolated, for example, by optocouplers, relay contacts or
transformers.
Flutter monitoring
Flutter monitoring is a process control function for digital input signals. Flutter
monitoring detects and reports untypical series of signal changes.
•
Detection: If a selectable number of signal changes occurs in a monitoring
window.
•
Report: Entry of diagnostic information and triggering of a diagnostic interrupt;
Evaluation and processing of the value status and the diagnostic information.
Freeze
This is a control command that the DP master can send to a group of DP slaves.
After receiving the FREEZE control command, the DP slave freezes the current
state of the inputs and transfers this cyclically to the DP master.
With every new FREEZE control command, the DP slave freezes the state of the
inputs again.
The input data are only sent cyclically by the DP slave to the DP master again after
the DP master has sent the UNFREEZE control command.
Ground
Ground is the conductive ground area whose electrical potential at any point can
be taken as zero. In the vicinity of grounding elements, the ground may have a
potential other than zero. For this reason, the term "reference ground" is often
used.
Содержание SIMATIC ET 200iS
Страница 20: ...Preface ET 200iS Distributed I O Station 1 6 A5E00087831 02 ...
Страница 34: ...Product Overview ET 200iS Distributed I O Station 2 14 A5E00087831 02 ...
Страница 84: ...Installation ET 200iS Distributed I O Station 5 18 A5E00087831 02 ...
Страница 168: ...Maintenance ET 200iS Distributed I O Station 8 6 A5E00087831 02 ...
Страница 184: ...Terminal Modules ET 200iS Distributed I O Station 10 8 A5E00087831 02 ...
Страница 188: ...Power Supply Module ET 200iS Distributed I O Station 11 4 A5E00087831 02 ...
Страница 320: ...Dimension Drawings ET 200iS Distributed I O Station 17 4 A5E00087831 02 ...
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Страница 335: ...Certifications ET 200iS Distributed I O Station A5E00087831 02 20 5 20 1 2 Interface module IM151 2 ...
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Страница 366: ...Marking ET 200iS Distributed I O Station 21 8 A5E00087831 02 ...
Страница 390: ...12 Product Information to the manual Distributed I O device ET 200iS Version 10 2001 A5E00163808 02 ...
Страница 416: ...26 Product Information RS 485 IS Coupler 6ES7 972 0AC80 0XA0 A5E00207628 01 ...
Страница 417: ...27 Product Information RS 485 IS Coupler 6ES7 972 0AC80 0XA0 A5E00207628 01 ...
Страница 418: ...28 Product Information RS 485 IS Coupler 6ES7 972 0AC80 0XA0 A5E00207628 01 ...
Страница 419: ...28 Produktinformation RS 485 IS Koppler 6ES7 972 0AC80 0XA0 A5E00207082 01 ...
Страница 420: ...28 Product Information RS 485 IS Coupler 6ES7 972 0AC80 0XA0 A5E00207628 02 ...