Annex
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PC Cards cifX PCI, PCIe, Low Profile PCIe | Installation, Operation and Hardware Description
DOC120204UM46EN | Revision 46 | English | 2015-12 | Relelased | Public
© Hilscher, 2008-2015
VARAN
V
ersatile
A
utomation
R
andom
A
ccess
N
etwork
A communication system for industrial Ethernet based on the DIAS-BUS
developed by Sigmatek. The system is supported by the VARAN-BUS-
NUTZERORGANISATION (VNO).
Watchdog Timer
A watchdog timer provides an internal supervision mechanism of a
communication system. It supervises that an important event happens
within a given timeframe (the watchdog time which can be adjusted
accordingly, for instance by a parameter in the warmstart message) and
causes an alarm otherwise (usually this is accomplished by changing the
operational state of the communication system to a more safe state).
X1, X2, X3, X4 …
serve as position names on the circuit board but can also have other or
extended meanings
X1, X2
(names on the front panel) ... serve for PC cards cifX PCI and PCI Express
with 2 channels to identify the respective communication channel:
X1 stands for fieldbus 1 (channel X1; in SYCON.net assigned to
Ch0
).
X2 stands for fieldbus 2 (channel X2; in SYCON.net assigned to
Ch1
).
XDD file
A special kind of Device Description file used by Ethernet POWERLINK.
XML
XML means Extended Markup Language. It is a symbolic language for
structuring data systematically. XML is standard maintained by the W3C
(World-wide web consortium). Device Description Files often use XML-
based formats for storing the device-related data appropriately.
