contact@webdyn.com | webdyn.com
V2.05 subject to changes | Webdyn © by Flexitron Group
2-wire RS485 wiring (Half-Duplex):
This is the most common RS485 standard use. A single pair of wires is used for data transmission and
reception. Several systems are linked in bus form as shown on the following gure. Different RS485
systems use different notations to indicate the correct connection form per differential communication
pair. The following gure shows some of the notations used.
4-wire RS485/ RS485 wiring (Full-Duplex):
This type of connection uses two pairs of wires for communication. One pair of wires carries data sent
from the concentrator to the device and the other pair the data sent from the device to the concentrator.
Several systems can be connected to the bus as shown on the following gure.
To Next Page
Loading...