Sean Daugherty:

The config switch should not be used under normal circumstances. It only needs to be used to try to correct issues such as the one you have now. Depressing this switch in otherwise normal use can possibly disrupt your connection between the units.

We will refer to the units as Receiver (the part that attaches to your Microcontroller) and Transmitter (the part that attaches to, you guessed it, the transmitter).

For this fix, we will be dealing mainly with the transmitter side of the pair. You will also need a small (5/64, the one used for shaft collars) VEX allen wrench or paper clip. This fix only applies if you have a steady green blinking Robot light on the transmitter side.

1- Make sure you have power connected to the unit, that it is off, and remove the VEXnet USB Key.

2- On the front of the unit, there is a small hole labeled “Config”. Insert your wrench into that hole and you should feel a small button inside the unit. Hold this button down.

3- While holding the button down, turn the unit on. You should see the robot light begin to flash green rapidly.

4- Release the Config button. The middle VEXnet light should briefly flash red.

5- Turn the unit off.

6- Now you will need to re-pair the unit with a corresponding receiver. To do this, connect both units with the A-A USB cable. Power both on and wait for a slow blinking Robot light and a solid VEXnet light. The units are now paired and ready for normal operation.

I hope this fix works for you. Feel free to contact me directly or call us at 903-453-0802 if you require further assistance.