Why is my File System no longer available (because of Error -71)?

FAQ #101559

In case the file system on e.g. a "blue memory module" such as the PCD7.R550, R551 or R561 is filled up to the last byte, it may happen that the memory module can no longer be accessed.

 

Symptom
After a file system has been filled up completely the files on this module are no longer accessible after the next reboot of the PCD. 

  • In case of an FTP access to the PCD, the file system on this memory module (e.g. M1_FLASH:/) is no longer visible.
  • In case a "Memory Management" FBox is placed in the Fupla program, the error -71 (FS_FILE_SYSTEM_CHECK_ERROR) is indicated.  

Reason
The reason for this situation is most likely that the whole memory has been used, and there is no more space left for executing a "compression" of the content of the module (see FAQ 101558 for more information regarding the amount of memory available on the file system).
In this case the firmware detects (at start-up of the PCD), that it is no longer possible to correctly manage the flash (e.g. executing a compression) and therefore avoids accessing the memory module with error -71: "Mounted with Errors".

Solution

  • If the error happened:
    In case no relevant data is stored on the module it can be made accessible by a format of the module (which can be executed by the "Memory Management" FBox from the library "File System").
    For formatting the card please set up the parameter "Block size: 1024bytes" in the "Memory Management" FBox. (When you set it to "default" the FBox tries to read the block size from the memory card and of course it fails.) 
  • In case important data is stored on the module, please contact your local sales office.
  • In order to avoid this error:
    - Do not fill-up the flash memory module to the last byte (but as described in the manual to 80%
      if static data is stored, and to 50% if data is regularly written to the flash module.
    - Update the firmware to firmware 1.16.27 and later (or 1.10.61 for older systems); these versions avoid
      the situation that the flash is filled up to the last byte (which can lead to the error -71).  

Remarks

  • This phenomenon can occur on the following systems or modules:
    - PCD3.R550, PCD3.R551, PCD3.R561
    - PCD7.R550, PCD7.R551, PCD7.R561
    - INTFLASH of a PCD3 Compact or a PCD1.M2

Categories

PCD7 / Rxxx

PCD3 / Rxxx

PCD1 / M2xx0

Last update: 28.05.2015 22:59

First release: 31.01.2011 10:17

Views: 58370

The requested software / document is no longer marketed by Saia-Burgess Controls AG and without technical support. It is an older software version which can be operated only on certain now no longer commercially available products.

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