20.09.2015 Views

Profibus Actuator Control Profibus DP Option Card Installation Manual

Profibus Actuator Control Profibus DP Option Card Installation Manual

Profibus Actuator Control Profibus DP Option Card Installation Manual

SHOW MORE
SHOW LESS
  • No tags were found...

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

<strong>Profibus</strong> <strong>DP</strong> Mk2 <strong>Option</strong> <strong>Card</strong> <strong>Installation</strong> <strong>Manual</strong><br />

4.2 Segmented Single Highway System<br />

Bus Master<br />

Segment 1<br />

Terminator<br />

Repeater<br />

Segment 2<br />

Powered<br />

Active<br />

Terminator<br />

Segment 3<br />

Repeater<br />

Fig 8: <strong>Profibus</strong> Single Channel Data Highway Topology<br />

The data highway may be connected as several segments coupled by repeaters. The repeaters or<br />

actuator slaves will require termination components if they are on the end of the segment. Alternately<br />

separately powered active termination devices can be used so that when the actuator is switched off<br />

the bus performance is not affected.<br />

Maximum number of devices participating<br />

in the exchange of data<br />

Maximum number of devices per segment<br />

including repeaters<br />

Maximum number of segments in series<br />

127 (addresses from 0 to 126, 0 is usually the PLC)<br />

32<br />

EN50170 specifies a maximum of 4 repeaters between<br />

any two devices. Some manufacturers of repeaters<br />

allow more than this number.<br />

16 of 66 Publication S420E V3.0 Issue 01/05

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!