Tyco Electronics Galaxy SC Controller J85501F-1
Issue 13 February 2001 Feature Descriptions 7 - 42
board is removed while system is up, the system performs a
WARM BOOT. On booting up, the remote module process
continuously checks for the board signature with sleep time about
10 seconds in between until the board present signal is detected.
The following is an estimate of the measuring cycle time and time
to recognize a newly inserted module.
Number of attached modules 1 16 32
64 128 255
Measure Cycle (sec) 6.8 9.5 12.3
18.0 29.4 52.0
New module scan (sec) 55 76 98
144 235 416
The configuration of the modules and associated channels is done
automatically by the system except in some special cases. Each module
has an attribute which, when set, will denote that the configuration of the
module and its associated channels is locked; and the system won’t
remove the configuration from the system even when the module is
physically removed from the system (tlk: true/false). This attribute can
be set by users, or can be set to true automatically when the user changes
any of the other attributes of the module or the associated channels.
If a module’s configuration is locked (tlk=true), then:
• Detection of error changes the status of the module (and associated
channels) to failed. The system RPM failed alarm is activated.
When the error conditions go away, the alarm signal is clear. The
module and its channels status change to attached.
• Removal of a module from system changes its status to detached,
but does not remove the inventory entry. A system warning (RPM
failed) is asserted.
• Reconnecting of a module with the same type restores its status to
attached. The RPM failed signal is clear.
• Reconnecting of a module with different type causes its status to
change to type changed, but will not change other attributes. A
system warning signal (type conflict) is asserted. If you reconnect a
new module of the same type as configured then the status will
change to attached, and the warning signal will be cleared. If you
clear the lock then the configuration data will be filled with the
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