Hi all, EIA/TIA 485 is an Hardware Specification, it supports both two wir and four wire mode of operation. I came across these points, "Balance line driver can have
1).Two output terminals termed as A & B where the data is transmitted. 2).A signal ground connection. 3).An input signal called an "Enable" signal. The purpose of the Enable signal is to connect the driver to its outpu terminals, A & B."As far as I have understood, in two wire mode of EIA/TIA 485 the enabl signal is "NOT" on the reciever of the device, so only either transmitte or receiver is active at the same time(In case of half duplex). While if want to implement EIA/TIA 485 in four wire mode(full duplex),how do connect my signal pin? What is the role of the Enable signal, when it com to the two wire or four wire mode?
Please do correct me if i have misunderstood the concept. This message was sent using the comp.arch.embedded web interface o