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Digital Output

Main plug connector
Figure 1: Main plug connector

It is possible to use the pin 7 digital output of the Main Plug Connector interface of the CANlink® wireless 4000.

There are two ways that this output can be used:

  • Manual
  • Wireless Connection Active

Manual Output

In this mode, the output can be switched manually by setting the value of an object in the Object Dictionary.

Set 0x3333:0x0F [Digital Output] to 0 to output a low voltage, and 1 to output high.

This value is volatile, so it must be configured by an external controller after each reboot.

Wireless Connection Active

This mode represents the state of a wireless connection by setting the pin 7 output appropriately: High when connected, and Low when not connected.

This value can represent one of each of the three wireless interfaces: WiFi, Bluetooth and BLE:

  • For WiFi, set 0x3333:0x6F [Digital Output Connection Visualization Wifi] to 0x01.
  • For Bluetooth, set 0x3333:0x6E [Digital Output Connection Visualization Bluetooth SPP] to 0x01.
  • For BLE, set 0x3333:0x70 [Digital Output Connection Visualization BLE] to 0x01.

In all cases, set the unwanted interface objects to 0x00 (disabled).

Output Physical Properties

Pin 7 switches the voltage applied to Pin 1 (Terminal 30, Vcc):

  • The maximum output current is 500mA
  • Maximum switching frequency is 10Hz

Switched by another device

An example of the Digital Output being switched by another device sending a CTO is contained in the CTO Walkthrough.