Setting a RAN Node Number

The adapter identifies RANs by their node numbers. Each RAN in a daisy chain must have a unique node number (1n through 4n), which must be set during installation. The node numbers must be assigned in ascending order with the lowest number assigned to the RAN closest to the 128-port asynchronous adapter. For direct connect configuration, it is permissible to skip node numbers (to facilitate insertion of additional RANs at a later date), as long as the ascending sequence is maintained.

Set the RAN Node Number

1. Turn the RAN on and wait for the power-on self-test (POST) to complete.
2. When P1 is displayed on the front panel seven-segment LED display, press the Left Arrow button once. The current node number will be displayed, for example, 1n for node 1.

   Note: Refer to RAN Front Panel and Display Modes for an illustration of the RAN front panel.

3. Press the Right Arrow button to advance the node number through the eight possible settings (1n through 8n). Only 1n through 4n are supported, 5n through 8n can be displayed but are not supported node numbers.
4. When the desired node number is displayed, press the Left Arrow button again to select the number. The display should now read Pn (indicating a pass condition). If there was an error, the display will read En .

   In the case of duplicate node numbers, the RAN farthest from the host adapter will display En , instead of AC , when the system is started.