Addressing The System; Addressing The Devices - AMX NXD-CA12 Installer's Manual

Using NetLinx Studio

Addressing the System

The NetLinx NXI system used by Design XPress consists of two devices: the master and the NXI
(serial ports, relays, IR ports, and I/O ports). Each is addressed separately on the NetLinx bus with
a unique device ID. There is no need to modify the device ID of the master unless the system is
being installed in a multi-master system. However, the device ID of the NXI may need to be
changed. Design XPress expects this device ID to be 5001:1:0.
To modify device IDs in NetLinx the current ID must be known so it can be directly told to change
to a new device ID. To determine the current device ID of the NXI use the online tree in NetLinx
Studio to view a list of all the current online devices the master recognizes. This list will show the
device ID and the type of device. Find the one that identifies itself as "NXI", and note its device ID.
To change the device ID, select the NetLinx Diagnostics option on the Tools menu and click on the
Device Addressing tab. Make sure the Change To Device check box is selected and the Change
To System check box is not selected. In the Device To Change box enter the current device ID of
the NXI in the Device field. Enter the new device ID, 5001, in the Change To Device field. Click
the Change Device/System Number button to make the change. Your online tree should change to
reflect the new ID of the NXI.

Addressing the Devices

Each device used by Design XPress and identified in the report file must have a unique NetLinx ID.
Therefore, each device will need to be addressed so it can be properly controlled. The easiest
method for setting device addresses is to connect each device onto the bus one at a time. The online
tree in NetLinx studio can be used to quickly identify which device was just added to the system.
When a device is plugged into the bus it should display in the online tree in a matter of seconds. If a
device is unplugged from the bus it will take a little longer to disappear because the master is
constantly sampling the bus for devices. When a new device is discovered it is immediately added
to the system. However, if a device disappears from the bus, the master will give it several retries
before giving up and removing it.
By addressing devices one at a time in this fashion it is very easy to do the addressing away from
the job site (office, home, etc.). This can save time and leg work while on-site where there are
always a million other things to get done.
Once the new device shows up in the online tree, its device ID and device type is displayed. Use
this device ID to change to the new value specified in the report file. To change the device ID, select
the NetLinx Diagnostics option on the Tools menu and click on the Device Addressing tab. Make
sure the Change To Device check box is selected and the Change To System check box is not
selected. In the Device To Change box enter the current device ID in the Device field. Enter the new
device ID (as specified in the report file) in the Change To Device field. Click the Change Device/
System Number button to make the change. Your online tree should change to reflect the new
device ID (the old device ID may hang around for a few seconds before disappearing).
12 Design XPress Installer's Guide