Verint nextiva s17xxe series User Manual - Multidrop Configurations
2: Configuring and Installing the Device
16
Verint Video Solutions
To use the RS-422/485 functionality, you need to:
1. Connect a twisted pair cable to the top multipole connector on the back of the device.
The connector gives access to the Tx+, Tx-, Rx+, Rx-, and ground signals.
2. Select the right operating mode (RS-422 4 wires, RS-485 2 wires, or RS-485 4 wires)
using SConfigurator or a video management software.
To properly make the connection to a four-wire RS-422 or RS-485 serial device, use the
following scheme (where the Tx connectors are for input and the Rx connectors are for
output):
For a two-wire RS-485 connection with a Nextiva device:
1. Create the Data- signal by shorting the Rx- and Tx- pins together.
2. Create the Data+ signal by shorting the Rx+ and Tx+ pins together.
3. Use the following wiring scheme:
Multidrop Configurations
Two multidrop configurations are available, for two or four wires, only with the RS-485
protocol.
The two-wire configuration is:
Peripheral connector
S17XXe connector
Tx+
Tx+
Tx-
Tx-
Rx+
Rx+
Rx-
Rx-
ground
ground
Peripheral connector
S17XXe connector
Data+
Data+
Data-
Data-
ground
ground
Data +
Tx
+
Tx
-
Rx
+
Rx
-
Tx
+
Tx
-
Rx
+
Rx
-
Data -
Nextiva device
Peripheral