Siemens SIMATIC ET 200AL, System Manual

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Glossary
PROFINET with STEP 7
Function Manual, 05/2021, A5E03444486-AL
317
Diagnostics error interrupt
Modules capable of diagnostics operations report detected system errors to the CPU by
means of diagnostics interrupts.
→ See also CPU
Direct data exchange
In the case of direct data exchange, an S7-1500 CPU provides cyclic user data from the
I/O area to one or more partners.
The direct data exchange function enables deterministic, isochronous I/O communication
between multiple S7-1500 CPUs.
DP master
A master which behaves in accordance with EN 50170, Part 3, is known as a DP master.
→ See also Master
DP slave
A slave operated on PROFIBUS with PROFIBUS DP protocol and in accordance with EN 50170,
Part 3 is referred to as DP slave.
→ See also Slave
DPV1
The designation DPV1 refers to the functional extension of acyclic services (to include new
interrupts, for example) provided by the DP protocol. The DPV1 functionality is integrated in
IEC 61158/EN 50170, Volume 2, PROFIBUS.
Duplex
Half duplex: One channel is available for alternating exchange of information.
Full duplex: Two channels are available for simultaneous exchange of information in both
directions.
Ethernet
Ethernet is an international standard technology for local area networks (LAN) based on
frames. It defines types of cables and signaling for the physical layer and packet formats and
protocols for media access control.
GSD file
As a Generic Station Description, this file contains all properties of a PROFINET device that are
necessary for its configuration in XML format.