Procentec ProfiHub A5 User Manual page 48

DP-V2
Electromagnetic
Compatibility
EMC
Hub
MPI
PCB
PROFIBUS DP
Repeater
Spur line
ProfiHub-A5B5-Manual-EN
DP-V2 is the second stage of extension of PROFIBUS DP after DP-V1. DP-
V2 devices shall comply with the following features:
- Data Exchange Broadcast (DxB) for slave to slave communication
(publisher/subscriber principle).
- Isochronous Mode (time tick synchronized operating slaves, e.g. drives)
- Up- and/or download of Load Region Data (domains)
- Clock Control (synchronization within slaves) and Time Stamping
- Redundancy.
See EMC.
The extent to which an electric or electronic device will tolerate electrical
interference from other equipment (immunity), and will interfere with other
equipment. Within the European Community as well as in other countries it is
regulated by law that electric and electronic components and equipment
comply with basic standards such as IEC 61000-6-2 or IEC 61326 or
corresponding individual product standards.
A Hub refreshes a signal and passes the information on to all nodes which
are connected to the Hub. Data frames which were received on one port are
transferred to all the other ports (chicken foot topology).
Multiple Protocol Interface. Protocol defined by Siemens which uses the
layer 1 and 2 of PROFIBUS (FDL).
Printed Circuit Board.
Acronym for "PROFIBUS for Decentralized Peripherals". Specification of an
open fieldbus system with the following characteristics:
- Polling master-slave-system (cyclic communications, MS0)
- Flying masters with robin round token passing coordination (MM)
- Connection based (MS1) and connectionless (MS2, MS3) acyclic
communication between masters and slaves
Options (e.g.):
- Data exchange broadcast (DXB), i.e. slave to slaves communication
- Isochronous mode of slaves
- Clock synchronization
- Redundancy
PROFIBUS DP is standardized within IEC 61158 and IEC 61784,
communication profile families 3/1 and 3/2
The term "PROFIBUS DP" also is a synonym for the RS485 based
deployments within factory automation.
Active physical layer device that receives and retransmits all signals over a
different port to increase the distance and number of devices for which
signals can be correctly transferred for a given medium.
A cable attached to a bus segment with a T-connection . Spurs are not
recommended with PROFIBUS DP. They are prohibited with 12 Mbps and
PROFIsafe operations. German term is "Stichleitung".
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Version 2.1.1 – June 2014
ProfiHub A5/B5 User Manual
© PROCENTEC 2005-2014 - Copyright - all rights reserved
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