Installation Manual

from your body. When holding a board, always wear a grounding device such as a grounded wrist
strap, and do not touch board components that are sensitive to static charge.
Before attempting board installation/exchange, note the following system rules concerning the
detection of boards:
- A detected board is considered to be PRESENT
- A PRESENT board can be ACCEPTED or REFUSED, depending on the system
dimensioning criteria
- On a cold reset, all PRESENT boards are taken into account (irrespective of whether they
are ACCEPTED or REFUSED)
- A board which is PRESENT on a cold reset can later be determined as ABSENT on a
warm reset if in the meantime the board has been unplugged or there has been a board
detection failure
- After a cold or warm reset, new boards are always taken into account and declared as
PRESENT (and then ACCEPTED or REFUSED)
The following table describes situations more specifically relevant to plugging/unplugging
boards.
Situation
A board is plugged into a slot never before
occupied
A board is replaced with another board of
the same type
A board is replaced with another board of a
different type
A PRESENT and ACCEPTED board is unplugged
A PRESENT and REFUSED board is unplugged
7.1.1.5.1 Adding a board into a vacant slot
Description
The board is detected as PRESENT and then
determined to be ACCEPTED or REFUSED
(according to configuration criteria, such as authorized
positions and maximum hardware capacity).
If the board is accepted, its accesses are
taken into account depending on the system dimensioning
criteria.
As above, except when the replacement board is
plugged in, configuration data for the previous
board is cleared.
The board's disappearance is detected and the
board is considered as out of order and then AB-
SENT. However, configuration data associated
with the unplugged board remains available.
The board's disappearance is detected and the
board is considered as ABSENT. However, configuration
data associated with the unplugged
board remains available.
The procedure presented below assumes that a board is to be installed in a vacant slot in the
system cabinet.
Note 1:
Hot installation is forbidden in OmniPCX Office RCE Compact platforms. It is also forbidden for
PowerCPU boards in all platforms.
1. If a hot installation is not possible, stop the system and disconnect it from the mains power
supply.
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