Foreword 
 
Foreword 
 
Notes on the Documentation 
  This description is only intended for the use of trained specialists in control 
and automation engineering who are familiar with the applicable national 
standards. It is essential that the following notes and explanations are 
followed when installing and commissioning these components. 
The responsible staff must ensure that the application or use of the 
products described satisfy all the requirements for safety, including all the 
relevant laws, regulations, guidelines and standards. 
 
Liability Conditions 
  The documentation has been prepared with care. The products described 
are, however, constantly under development. For that reason the 
documentation is not in every case checked for consistency with 
performance data, standards or other characteristics. In the event that it 
contains technical or editorial errors, we retain the right to make alterations 
at any time and without warning. No claims for the modification of products 
that have already been supplied may be made on the basis of the data, 
diagrams and descriptions in this documentation. 
 
Trademarks 
 Beckhoff
®
, TwinCAT
®
, EtherCAT
®
, Safety over EtherCAT
®
, TwinSAFE
®
 
and XFC
®
 are registered trademarks of and licensed by Beckhoff 
Automation GmbH. 
Other designations used in this publication may be trademarks whose use 
by third parties for their own purposes could violate the rights of the 
owners. 
 
Patent Pending 
  The EtherCAT Technology is covered, including but not limited to the 
following patent applications and patents: 
EP1590927, EP1789857, DE102004044764, DE102007017835 
with corresponding applications or registrations in various other countries. 
The TwinCAT Technology is covered, including but not limited to the 
following patent applications and patents: 
EP0851348, US6167425 with corresponding applications or registrations in 
various other countries. 
 
Copyright 
 © Beckhoff Automation GmbH. 
The reproduction, distribution and utilization of this document as well as the 
communication of its contents to others without express authorization are 
prohibited. Offenders will be held liable for the payment of damages. All 
rights reserved in the event of the grant of a patent, utility model or design. 
 
State at Delivery 
  All the components are supplied in particular hardware and software 
configurations appropriate for the application. Modifications to hardware or 
software configurations other than those described in the documentation 
are not permitted, and nullify the liability of Beckhoff Automation GmbH. 
 
Delivery conditions 
  In addition, the general delivery conditions of the company Beckhoff 
Automation GmbH apply. 
 
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