How do I terminate an RS-485 serial network with RJ45 connectors?


01 March 2021

In the diagram above, the RS485 network has the terminator added at only one end because the PLC has a built-in terminator.  This is usually not the case and the T junction box and terminator has to be added at both ends of the network.  Remember that your master device on the RS485 network, can be in the middle or anywhere on the network.  The terminators must be at each end as shown below: