User guide

Connecting RS-485 Devices

In order to connect an RS-485 device to the S1800e, you will need to create a

Data+ and a Data- signal from the existing Tx and Rx signals.

Use the following table to help you make the proper connection to a two-wire

RS-485 serial device, where the Tx signals are for input and the Rx signals are

for output.

Note

On some equipment, signal terminology may vary. Refer to the peripheral

documentation to find the equivalent terms.

Signal on Peripheral Signal on EdgeVR

Data+ Data+

Data- Data-

ground ground

► To connect RS-485 devices

1. Remove the terminal block plug from the rear of the device.

2. Create the Data- signal by wiring the Tx- and Rx- pins together on the

terminal block plug.

3. Connect a twisted pair cable to the terminal block plug.

4. Connect the terminal block plug to the rear of the device.

Chapter 2: Installing the Single-and Dual-Port Devices