When you connect to a device, the Trex unit by default automatically polls address zero and connects to the device at that address. If the Trex unit does not find a device at address zero, you are prompted to change the polling address in the device connection wizard.
If you change the polling option, the selected option is not saved. You need to select the desired option each time you connect to a device.
Note: If you have two devices on a HART loop and one device is at
address zero, disable the
Auto-Connect option in the Trex Settings.
Otherwise, the Trex unit automatically connects to the device at address zero
and does not detect the second device.