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 Description
A board is plugged into a slot never before
occupied
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.
A board is replaced with another board of
the same type
A board is replaced with another board of a
different type
As above, except when the replacement board is
plugged in, configuration data for the previous
board is cleared.
A PRESENT and ACCEPTED board is
unplugged
The board's disappearance is detected and the
board is considered as out of order and then
ABSENT. However, configuration data
associated with the unplugged board remains
available.
A PRESENT and REFUSED board is
unplugged
The board's disappearance is detected and the
board is considered as ABSENT. However,
configuration data associated with the unplugged
board remains available.
7.1.1.5.1 Adding a board into a vacant slot
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.
'
7-3
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