Siemens ET 200pro Operating Instructions Manual page 530

Glossary
DSe
Direct starter, electronically switched
Equipotential bonding
An electrical connection (equipotential bonding conductor) that ties parts of electrical
equipment and extraneous conductive parts to the same or approximately the same potential
to prevent disturbing or dangerous voltages between these parts.
ET 200
An ET 200 distributed I/O system based on the PROFIBUS DP protocol supports the
connection of distributed I/O to a CPU or a suitable DP master. ET 200 is characterized by
high-speed response times due to a minimum data transfer volume (bytes).
The ET 200 is based on the IEC 61784-1: 2010 Ed3 CP 3/1 standard.
ET 200 operates according to the master-slave principle. The master interface IM308-C or a
315-2 DP CPU can be a DP master.
Distributed I/O ET 200M, ET 200X, ET 200L, ET 200S, or DP slaves of Siemens or other
manufactures may be used as DP slaves.
External lightning protection
External system 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 at 100 Mbit/s. This transmission
technology utilizes the 100 Base-T standard for this.
FREEZE
Control command that the DP master sends to a group of DP slaves.
When it receives a FREEZE command, the DP slave freezes the current status of the inputs
and transfers the input data cyclically to the DP master.
The DP slave freezes its input status again after each new FREEZE command.
The DP slave does not resume the transfer of input data to the DP master until the
DP master has sent the UNFREEZE control command.
Grounding
Refers to the bonding of conductive elements to ground via a grounding system.
530
and 0 .
A B
ET 200pro distributed I/O system
Operating Instructions, 03/2013, A5E00335544-08