Tag Layout - Allen-Bradley Logix5000 Series Application Book

46 Troubleshoot the CompactFlash File System
Publication LOGIX-AP007B-EN-P - January 2007

Tag Layout

In the write sequence, there are seven major steps and one overall status. The
CF_Write_Seq_Status.Parse_Data status has been expanded to show its
format. After a command has been executed, you will want to check the overall
status.
The following table lists the codes that will appear in the overall status.
Code Description
0 The command has not been run or is currently running.
1 The command executed without errors.
2 The command ran with errors and you will need to expand each
individual sequence and check its Status element.
3 A checksum error has been found. This will only occur for the read and
write commands. This means that a read or write was attempted four
times and failed the checksum verification.
8 No CompactFlash card was present when a command was executed.
The command will not be attempted.
Codes that will appear in the individual sequence status when a 2 appears in the
overall status:
4 A file size mismatch occurred. If it is a read command than the tag
data_read is too small. If it is a write command than data_to_write is
too small. Increase the size of the array.
5 The number of Bytes_to_RW was set to zero.
6 A message instruction involved in this sequence errored. Look at the
Message_Error and Message_Error_Extended elements.
7 No file name was entered.