Safety
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PC Cards cifX Compact PCI, Mini PCI, Mini PCIe, PCI-104 | Installation, Operation and Hardware Description
DOC120205UM53EN | Revision 53 | English | 2019-03 | Released | Public
© Hilscher, 2008-2019
2.5.4 Power Disconnect while downloading Firmware or
Configuration
If during the process of downloading a firmware or configuration
•
the power supply to a PC with the software application is interrupted,
•
or the power supply to the PC card cifX is interrupted,
•
or a reset to the PC card cifX is performed,
this may lead to the following consequences:
Loss of Device Parameters, Firmware Corruption
•
The firmware download or the configuration download will be interrupted
and remains incomplete.
•
The firmware or the configuration database will be corrupted and device
parameters will be lost.
•
Device damage may occur as the PC card cifX cannot be rebooted.
Whether these consequences occur depends on when the power
disconnect occurs during the download.
¾
During configuration download process, do not interrupt the power
supply to the PC, or to the PC card cifX and do not perform a reset!
Otherwise you might be forced to return your PC card cifX for repair.
Power Drop during Write and Delete Accesses in the File System
The FAT file system in the netX firmware is subject to certain limitations in
its operation. Write and delete accesses in the file system (firmware
update, configuration download etc.) can destroy the FAT (File Allocation
Table) if the accesses cannot be completed if the power drops. Without a
proper FAT, a firmware may not be found and cannot be started.
Make sure that the power supply to the device is not interrupted during
write and delete accesses in the file system (firmware update, configuration
download, etc.).
2.5.5 Exceeding the maximum Number of allowed Write/Delete
Accesses
This device uses a serial Flash chip for storing remanent data, such as
firmware, configuration, etc. This chip allows a maximum of 100 000
write/delete accesses which is sufficient for a standard device operation.
Writing/deleting the chip excessively (e.g. in order to change configuration
or name of station) will exceed the maximum number of allowed
write/delete accesses and, thus, result in damage to the device. If, e.g., the
configuration is changed every hour, the maximum number will be reached
after 11.5 years. If, e.g., it is changed every minute, the maximum number
will already be reached after approx. 69 days.
Avoid exceeding the maximum number of allowed write/delete accesses by
excessive writing.
