Solved

maximum length

Posted on 2004-08-05
15
1,252 Views
Last Modified: 2008-02-07
What is the maximum length for RS485 and 10(and)100 BaseTx ?

Thanks,
Andrew
0
Comment
Question by:andrewyu
  • 3
  • 3
  • 3
  • +1
15 Comments
 
LVL 57

Accepted Solution

by:
Pete Long earned 38 total points
ID: 11724344
0
 
LVL 57

Expert Comment

by:Pete Long
ID: 11724351
Hi ,
> What is the maximum length for RS485 and 10(and)100 BaseTx
Question
 
What is the maximum cable length that can be used over RS485 communication?
 
Answer
 
The maximum cable length should not exceed 4000 ft or approx 1200 m
http://www.axis.com/techsup/faq/index.cgi?id=2659

Cheers!
0
 
LVL 57

Expert Comment

by:Pete Long
ID: 11724364
,
Maximum Segment Length for 10Base-T
http://www.duxcw.com/dcforum/DCForumID2/1896.html

100BASE-TX Ethernet Unshielded Twisted-Pair (UTP) Cable Maximum and Minimum Length Requirements
http://www.duxcw.com/faq/network/cablng.htm
0
 
LVL 6

Assisted Solution

by:Ferrosti
Ferrosti earned 36 total points
ID: 11724390
RS-485: ISO norm 8482 says a maximum length of 500 meters
10 Base T: 100 meters, or 300 meters using signal amplifiers (repeaters)
100 Base T: see above

Regards, Ferrosti
0
 
LVL 5

Assisted Solution

by:AshuraKnight
AshuraKnight earned 36 total points
ID: 11724593
Use WiFi :)
0
 
LVL 5

Expert Comment

by:AshuraKnight
ID: 11724622
Cable more than 100 meters = cost too much and need proper installation
WiFi : plug and play (or pray ? :P)
0
Comprehensive Backup Solutions for Microsoft

Acronis protects the complete Microsoft technology stack: Windows Server, Windows PC, laptop and Surface data; Microsoft business applications; Microsoft Hyper-V; Azure VMs; Microsoft Windows Server 2016; Microsoft Exchange 2016 and SQL Server 2016.

 

Expert Comment

by:tbacavalier
ID: 11724629
Just a note on the 10 Base T and 100 Base T Ethernet over UTP cable, while you can run it up to 100m or more, I wouldn't use runs of more than 80m (on runs without signal amplifiers) due to signal degredation, and hence performance degredation. Also, it is a bad idea to run long runs of 10 and 100 Base T anywhere near power cables, flourescent lights, and other sources of electrical noise.
0
 

Expert Comment

by:tbacavalier
ID: 11724635
AshuraKnight:

Plug and pray indeed, not to mention only half the speed of 100mbit ethernet at best and all the security woes (or work to prevent them) ;)
0
 
LVL 6

Expert Comment

by:Ferrosti
ID: 11725548
@tbacavalier
Ethernet specs say 100 meters from end to end. This includes wires on the board as also the wires from the wall to the computer.
And you are correct regarding the power cables and lights. Anything that could cause electric noise is bad.
0
 
LVL 5

Expert Comment

by:AshuraKnight
ID: 11726447
hehe:)
0
 

Expert Comment

by:tbacavalier
ID: 11727050
Ferrosti:

True, Ethernet specs say 100 metres, but real life experience shows otherwise for full network performance. 80m could be a little on the conservative side, but 100m in 98-99% of situations will not achieve full speeds.
0
 
LVL 6

Expert Comment

by:Ferrosti
ID: 11729231
Yes, right.

And if you were going to place your cable behind a magnetic resonance tomograph you won´t get very far, either ;-) Choose LWL instead...
This is all a matter of specifications and practical experience.

In your case one still can do a flood ping from a Linux box and resize the MTU size. This helps a lot, but will of course not bring back full performance.
0

Featured Post

New! My Passport Wireless Pro Wi-Fi Mobile Storage

Portable wireless storage to offload, edit, and stream anywhere.

High-capacity, wireless mobile storage designed to accompany professional photographers and videographers in the field to easily offload, edit and stream captured photos and high-definition videos.

Join & Write a Comment

In this article we have discussed the manual scenarios to recover data from Windows 10 through some backup and recovery tools which are offered by it.
Every server (virtual or physical) needs a console: and the console can be provided through hardware directly connected, software for remote connections, local connections, through a KVM, etc. This document explains the different types of consol…
This video discusses moving either the default database or any database to a new volume.
This video gives you a great overview about bandwidth monitoring with SNMP and WMI with our network monitoring solution PRTG Network Monitor (https://www.paessler.com/prtg). If you're looking for how to monitor bandwidth using netflow or packet s…

747 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

13 Experts available now in Live!

Get 1:1 Help Now