Connecting to External Devices

External devices are connected to the camera through the I/O terminal block. The pinout for the I/O terminal block is shown in the following diagram:

Figure 1: Example application.

  1. GND
  2. RS-485 RX/TX+ — Half-duplex RS-485 interface for controlling external equipment.
  3. RS-485 RX/TX- — Half-duplex RS-485 interface for controlling external equipment.
  4. Input (-)/Output A — Shared pin for Input and Output.
  5. Input (+) — The input uses a photocoupler and is electrically isolated from the internal circuitry. The input voltage should not exceed 12 V.
  6. Output B — The output uses a photocoupler and is electrically isolated from the internal circuitry. The output terminal (A and B) connections can be made with either polarity. The output can drive a maximum load of 50 V and 120 mA.
  • * — Relay
  • ** — Switch
  • 0 — External Device