Siemens SIMATIC ET 200SP HA System Manual page 135

Coupling type
NAP (Network Access Point) is a communication connection within IEC 61158-6-10 V2.3.
• S1: IO device to an IO controller
Singular interface module without system redundancy
• S2: IO device to redundant IO controller
IO device connected singular interface module via system redundancy on the redundant IO
controller.
• R1: Redundant IO device to a redundant IO controller
IO device with redundant interface module connected to redundant IO controller via system
redundancy.
The coupling type differentiates between the configurations according to use of the IO device.
Note: Ring structures with MRP (Media Redundancy Protocol) can be built regardless of the type
of coupling.
Crimping
Procedure in which two components, e.g. ferrule and cable, are connected with each other by
plastic strain.
Derating
Adjustment of the permissible ambient temperature depending on the air pressure (usually
corresponds to a specific geographical installation position - elevation above sea level).
Device name
Before an IO device can be addressed by an IO controller, it must have a device name.
An IO device is delivered without a device name. An IO device can only be addressed by the IO
controller after it has been assigned a device name via the PG/PC or via the topology, e.g. for the
transfer of configuration data (such as IP address) during startup or for the exchange of user data
during cyclic operation.
Diagnostics
Monitoring functions for the recognition, localization, classification, display and further
evaluation of errors, faults and messages. They run automatically during plant operation. This
increases the availability of plants because commissioning times and downtimes are reduced.
Distributed I/O system
System with input and output modules that are configured on a distributed basis, far away from
the CPU controlling them.
DP
→ Distributed I/O system
Modules for devices in a hazardous area
System Manual, 04/2021, A5E50165138-AA
Glossary
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