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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