Using the ICU Window
iSTAR eX Installation and Configuration Guide 5–19
Display Area
The Display Area lists controllers that respond to the ICU broadcast. The ICU 
displays the following information for each controller. 
Comm Fail
The controller is in a Communication Failure state, and 
the ICU is unable to communicate with the controller. 
This can be a transient state when you refresh the ICU 
display, and is replaced by one of the other states when 
the ICU receives a response from the
controller.
Table 5.3: ICU Window Icons (Continued)
Icon Description
Table 5.4: ICU Window Columns
Column Description
Icon Indicates the status of the controller. 
MAC Add Displays the last six nibbles of the controller’s MAC address. 
MAC addresses are unique hardware addresses for iSTAR eX. A MAC address cannot be 
changed. The iSTAR eX MAC address is indicated by a label on the iSTAR eX GCM board. The 
first six nibbles of the MAC address are fixed for all controllers (set at 00-50-F9). 
Name Displays the name of the controller as it was configured in the C•CURE Controller dialog box. 
IP Address Displays the controller’s IP address. 
Use the ICU to assign IP addresses to masters. Use the C•CURE Administrative application to 
assign IP addresses to cluster members. 
If “0.0.0.0” is displayed in this field, the IP address is not configured. 
Parent IP Address If this controller is a cluster member, displays the IP address of the controller’s master. 
If this controller is a master, displays the IP address of the host. 
If “0.0.0.0” is displayed in this field, a master is not assigned to the controller or the master IP 
address is not configured. 
FW Version Displays the controller’s firmware version. ICU Version 3.3.0 and higher recognize any firmware 
version higher than Version 2.1. Earlier firmware versions are listed as “Unknown”.