Schneider Electric 890USE17700 - Manual (Page 154)

Advanced Configuration Features
154 890USE17700 April 2004
Recovering from
a Mandatory
Stop Pushing the RST button (See The RST Button, p. 55) while recovering from a
mandatory stop will load the island’s default configuration data.
Hot Swapping a
Mandatory
Module If the NIM has stopped island bus operations because it cannot detect a healthy
mandatory module, you can recover island bus operations by installing a healthy
module of the same type. The NIM automatically configures the replacement module
to match the removed module. Assuming that other modules and devices on the
island bus are correctly configured and conform to their configuration data as written
to Flash memory, the NIM will start/restart normal island bus operations.
WARNING
UNINTENDED EQUIPMENT OPERATION/LOSS OF
CONFIGURATION—RST BUTTON WHILE RECOVERING FROM
MANDATORY STOP
Pushing the RST button (See The RST Button, p. 55) causes the island
bus to reconfigure itself with factory-default operating parameters,
which do not support mandatory I/O status.
z Do not attempt to restart the island by pushing the RST button.
z If a module is unhealthy, replace it with the same module type.
Failure to follow this precaution can result in death, serious injury,
or equipment damage.
Note: When hot swapping a mandatory module with a Fipio NIM present, the
hardware configuration fault bit (x5) in the standard channel status is set.
Replacing the module does not clear the bit. To restore normal operations in
accordance with Fipio standards, reset the NIM with a reset command from the
fieldbus or cycle NIM power.