PD (Pull Up/Down Direction)

This command applies to the XBee 3 Zigbee RF Module.

The resistor pull direction bit field (1 = pull-up, 0 = pull-down) for corresponding I/O lines that are set by the PR command.

If the bit is set, the device uses an internal pull-up resistor. If it is clear, the device uses an internal pull-down resistor. See the PR command for the bit order.