Serial Connecting via RS-232 or RS-485

COM Port Settings

In default working mode, the camera can connect to a VISCA controller via an RS-232 or RS-485 serial interface. The applicable COM port settings are (where '*' stands for 'Default value'):

RS-232

  • Baudrate: 2400/4800/9600*/115200
  • Start bit: 1 bit
  • Data bit: 8 bits
  • Stop bit: 1 bit

RS-485 (half-duplex mode)

  • Baudrate: 2400/4800/9600*
  • Start bit: 1 bit
  • Data bit: 8 bits
  • Stop bit: 1 bit

RS-232 Interface

Connect the controller to the back of the camera via the RS-232 cables as shown below:

Figure 11: RS-232 Cable and Interface Connection (Mini DIN-8 and Windows DB-9)

RS-232 Network Connection

Execute the following step to connect the controller to the back of the camera(s) via RS-232:

  1. Make the connection using daisy chaining network architecture. Keep in mind that the maximum cable length for RS-232 is 10–15 m.

Figure 12: RS-232 Network Connection Diagram

For a connection between the Avonic cameras, you need a third-party RS-232 mini DIN-8 male-to-male cable, since both RS-232 ports at the back of the camera are only suitable for these types of connectors.

RS-485 Interface

Connect the controller to the + and - terminals at the back of the camera via the RS-485 cables, as shown below. The color of the connecting cables (orange and blue in the figure) may vary.

Figure 13: RS-485 Interface

RS-485 Network Connection

Execute the following steps to connect multiple cameras to RS-485:

  1. Attach the cameras to a 2-wire twisted pair bus (maximum length 1200 m) that is terminated at both ends with a 120 Ω impedance resistor.
  2. Ensure that the maximum distance from the bus to the back of the camera or controller is 5 m. If you use only one camera, the impedance resistor is not needed.

Figure 14: RS-485 Network Connection Diagram


Serial Connections (RS-232 / RS-485)

Connect VISCA controllers via RS-232 or RS-485. Daisy chaining via RS-232 is supported.

RS-232 Interface

RS-232 Cable

RS-232 daisy chain diagram

RS-485 Interface

RS-485 bus connection



Serial Settings

Figure 49: WebGUI > SYSTEM > Serial Settings

You can choose the preferred protocol to use and the accompanying address to go with it. Or you can select the default protocol type 'Auto' to let the camera detect which protocol is being used. Addressing is still needed, even with the automatic setting.

    Click SAVE to apply your settings. A small confirmation dialogue appears in the bottom right corner.