Hi,
You can use RS485 repeaters to boost signal integrity and cable length. In theory, there is no limit to the cable length if you use repeaters.
The RS485 I'll use is half duplex (two wires). How can I control the data direction (enable the driver)?
Edi
-----Original Message----- Sent: 09 December 2003 14:04 To: Multiple recipients of list CHIPDIR-L
Hi all
The RS485 is defined to a maximum lenght of 1200m at 400kbps. I don't need 400kbps, but up to 2500m of cable. Is it possible to extend to this lenght with 9600bps?
Are there other standards for data transmission? I have two wires (plus power and ground), one master and up to 20 slaves. The maximum distance between two slaves is 500m. A multimaster bus would be nice, but is not a must.
The network should also work if the cable is broken (up to the break). With RS485, I would switch the termination with a relais.
What else... Oh yes, the system is battery powered and should work fron 25�C to -40�C.
Any ideas?
Edi Im Hof
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-- Author: Edi Im Hof INET: [EMAIL PROTECTED]
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++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ + IH electronic + Phone: ++41 52 320 90 00 + + Edi Im Hof + Fax: ++41 52 320 90 04 + + Doernlerstrasse 1, Sulz + URL: http://www.ihe.ch + + CH-8544 Rickenbach-Attikon + E-Mail: [EMAIL PROTECTED] + + Switzerland + + ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-- Author: Edi Im Hof INET: [EMAIL PROTECTED]
Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB CHIPDIR-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
