SiePortal

The integrated platform for your product selection, buying and support workflow - bringing together Industry Mall and Online Support.

Products & Services
- Menu temporary not available
- Menue temporary not available
- {{item.title}}
Support Support
{{(apiData.Support | filter:{'rank':1}:true)[0].title}} Support
- Menu temporary not available
- Menue temporary not available
- {{item.title}}
MySiePortal MySiePortal
{{(apiData.MySiePortal | filter:{'rank':1}:true)[0].title}} MySiePortal
- Menu temporary not available
- Menue temporary not available
- {{item.title}}
Cart ({{apiData.CartCount}})

Navigation

Place of RS 485 Repeater

10/8/2007 12:06 PM	Rate (0)
himexpert Posts: 30 Rating: (1)	Hi All, I know this is some kind of stupid question but it is important to me. I'm doing a furnace project& I'm using RS -485 Repeater ModelNo.6ES7-972-0AA01-0XA0. Can anybody tell me where could i place the RS - 485 repeater ? (Baud Rate 1.5 Mbps) In the local Panel (even if 100M in field Exceeds)or It should be placed in the fieldbefore 100M length of Profibus exceeds. It no where mentioned in manaul where to place the Repeater in local panel or field panel. It is just written whencan u use RS - 485 Repeater. Thanks, Best Regards, himexpert
himexpert Posts: 30 Rating: (1)
Suggestion To thank Quote Answer
This contribution was helpful to 1 thankful Users remia

10/8/2007 1:13 PM	Rate (0)
umencho Grandmaster-Expert Joined: 3/21/2006 Last visit: 1/10/2026 Posts: 10247 Rating: (1183)	himexpert Hi All, I know this is some kind of stupid question but it is important to me. I'm doing a furnace project& I'm using RS -485 Repeater ModelNo.6ES7-972-0AA01-0XA0. Can anybody tell me where could i place the RS - 485 repeater ? (Baud Rate 1.5 Mbps) In the local Panel (even if 100M in field Exceeds)or It should be placed in the fieldbefore 100M length of Profibus exceeds. It no where mentioned in manaul where to place the Repeater in local panel or field panel. It is just written whencan u use RS - 485 Repeater. Thanks, Best Regards, himexpert Hi You must put the repeater before 100m lenght of profibus exseeds. Or on each <=100mprfibus you must put repeater. See diagram on the second page :click best regards umencho

Suggestion To thank Quote Answer

10/8/2007 1:57 PM	Rate (0)
himexpert Posts: 30 Rating: (1)	Hi UMENCHO, Thanks a lot. This will be great help to me. Best Regards, himexpert
himexpert Posts: 30 Rating: (1)
Suggestion To thank Quote Answer

10/8/2007 2:26 PM	Rate (0)
dchartier Grandmaster-Expert Joined: 9/27/2006 Last visit: 1/14/2026 Posts: 12481 Rating: (2722)	Hello guys; At 1,5 MB, the maximum segment length is 200 m, not 100 (this is for higher speed values, i.e. 12 MB). See the attached file, extracted from a Siemens presentation on the fundamentals of Profibus-DP: You need a repeater at 1,5 MB when the segment length exceeds 200m, or if there will be more than 31 nodes on one segment. Hope this helps, Daniel Chartier Attachment PB_Distance.jpg (778 Downloads)

Suggestion To thank Quote Answer