Siemens SIMATIC ET 200eco PN Operating Instructions Manual page 206

Glossary
Diagnostics
The detection, localization, classification, visualization and further evaluation of errors,
disturbances and messages.
Provides monitoring functions which are executed automatically when the system is in RUN.
Increases plant availability by reducing commissioning times and down times.
Distributed I/O systems
I/O systems that are not integrated into the central CPU rack, but rather at distributed remote
locations. Example:
● ET 200M, ET 200X, ET 200L, ET 200S, ET 200pro, ET 200eco PN
● DP/AS-I Link
● S5-95U with PROFIBUS-DP slave interface
● Further DP slaves supplied by Siemens or other vendors.
Electrically isolated
The reference potentials of the control and load circuit of isolated I/O modules are electrically
isolated, for example, by means of optocoupler, relay or transformer. I/O circuits may be
connected to the same potential.
Equipotential bonding
Electrical connection (equipotential bonding conductor) that keeps electrical equipment and
extraneous conductive objects to the same or almost the same potential in order to prevent
disturbing or dangerous voltages between those objects.
External lightning protection
External plant components at which galvanic coupling of lightning surges is excluded.
Corresponds with lightning protection zone 0
Fast Ethernet
Fast Ethernet describes the standard for transferring data with 100 Mbps. This transfer
technology used the 100 Base-T standard for this.
Grounding
Refers to the bonding of conductive elements to ground via a grounding system.
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and 0 .
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Operating Instructions, 06/2009, A5E01250250-04
ET 200eco PN