Benutzerhandbuch / User Manual - TR Electronic
Benutzerhandbuch / User Manual - TR Electronic
Benutzerhandbuch / User Manual - TR Electronic
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PROFIBUS / PROFIsafe - Commissioning<br />
6.2 PROFIsafe<br />
PROFIsafe is the profile for the transfer of safety-oriented data via PROFIBUS and<br />
PROFINET and is internationally standardized in IEC 61784-3-3.<br />
PROFIsafe is a functional extension of PROFIBUS-DP and was the first<br />
communication standard in accordance with safety standard IEC 61508, which<br />
permits standard and fail-safe communication on one and the same bus line.<br />
PROFIsafe devices therefore do not require any modifications to the existing<br />
hardware components, and can be integrated problem-free into existing systems.<br />
These characteristics are implemented with the "Black-Channel" principle:<br />
● No effect on standard bus protocols<br />
● Independent of the respective transmission channel, whether copper cable, fiberoptic<br />
cable, backplane bus or wireless<br />
● Neither the transmission rates nor the respective error detection play a role<br />
● For PROFIsafe the transmission channels are only "Black Channels"<br />
Figure 14: "Black-Channel" principle [source: PROFIsafe system description]<br />
© <strong>TR</strong>-<strong>Electronic</strong> GmbH 2010, All Rights Reserved Printed in the Federal Republic of Germany<br />
Page 142 of 207 <strong>TR</strong> - ECE - BA - DGB - 0079 - 03 05/25/2011
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