• 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 oc-
cupied
The board is detected as PRESENT and then deter-
mined to be ACCEPTED or REFUSED (according to
configuration criteria, such as authorized positions
and maximum hardware capacity). If the board is ac-
cepted, its accesses are taken into account depend-
ing 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 dif-
ferent 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 unplug-
ged
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.
A PRESENT and REFUSED board is unplug-
ged
The board's disappearance is detected and the
board is considered as ABSENT. However, configu-
ration data associated with the unplugged board re-
mains available.
7.6.1 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:
Hot installation is forbidden in OXO Connect Compact platforms. It is also forbidden for PowerCPU EE
boards in all platforms.
1. If a hot installation is not possible, stop the system and disconnect it from the mains power supply.
2. Locate the required vacant slot in the cabinet and remove the metal plate for this slot.
3. Taking anti-static precautions (for example, by wearing a grounded wrist strap), pick up the new
board and plug it into the vacant slot.
4. Secure the end-plate of the board to the cabinet with the screw provided.
5. If you have stopped and powered down the system, reconnect it to the mains power supply and
restart it.
6. Perform any configuration and/or tests required for the new board.
Note:
Following configuration in the OMC tool, you may be required to perform a warm reset of the system for the
configuration changes to take effect. In this case, the software will prompt you to perform the warm reset.
Chapter
7
Maintenance Level 1
3EH21123USAA - Ed. 01 - April 2017 - Installation Manual 197/207
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