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14 Stacking
Unit ID Selection Process
The unit ID selection process is as follows:
1
Power up
the device
— To power up the device perform the following tasks:
a
Ensure that the stand-alone/Master device Console port is connected to a VT100 terminal device
or VT100 terminal emulator via the RS-232 crossover cable.
b
Locate an AC power receptacle.
c
Deactivate the AC power receptacle.
d
Connect the device to the AC receptacle.
e
Activate the AC power receptacle.
f
Confirm that the device is connected and operating correctly by examining the LEDs on the
front panel.
When powering up, the configured LED number (corresponding to the previously saved unit ID)
begins to flash. The LED flashes for 15 seconds. During this period, you can select a specific Stack ID
by pressing the Stack ID button until the appropriate Stack ID LED is illuminated.
2
Selection process
— To advance the stacking ID LED number, continue pressing the Stack ID button.
When LED 8 is flashing, pressing the Stack ID button results in the device being configured as a
standalone. Pressing the Stack ID button again advances the Stack ID to 1. Unit 1 and Unit 2 are
master-enabled units; refer to the User Guide for information about the master-selection process.
3
End selection process
— The unit ID selection process is completed when the 15-second selection
period expires. The Stack ID button becomes unresponsive and the unit ID is set to the LED ID
flashing at the end of the period.
NOTE: Perform these steps one unit at a time until all stack members are powered up and their Stack IDs are
selected. Performing the steps one unit at a time allows sufficient time to select the Stack ID for each unit.
However, the entire stack should be cabled as per the "Stacking Cable Diagram" before powering up the devices.