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File System
Page 224 100-88002 Rev B
Function Return the last file command status. All
ASCII [ESC] [RS] ?
Hexadecimal 1BH 1EH 3FH
Decimal <27> <30> <63>
The [ESC][RS]? Command requests the file system to return the status of the last file
operation.
This command returns an identifier byte, followed by 2 bytes indicating the status
results of the last file command. The format will be as follows:
?<Status><Details> or 3F, (47 or 42), <Details>
Where:
Status = ‘G’ for success and ‘B’ for Failure
Detail = Detailed status as a binary byte with bit definitions as follows:
Bit Hex Decimal Function
0 01 1 File Open
1 02 2 File in Write Mode
2 04 4 The Read response is shorter than requested
and EOF has been encountered.
3 08 8 The file is already open.
4 10 16 The file system has no space for the preceding
operation. Could be out of Flash or out of Buffer
space.
5 20 32 A write operation has been attempted to a read
only file.
6 40 64 File requested was not found
8 80 128 An error has occurred. Other bits may be set that
give additional detail. (This bit determines the G
or B status in the previous byte)
Function Write File command. All
ASCII [ESC] [RS] W <L
L
><L
H
><… data ..>
Hexadecimal 1BH 1EH 57H
Decimal <27> <30> <87>
Description The [ESC] [RS]W command sends data to the printer to be stored in the
file. The <LL><LH> parameters specify the length of data that will follow where the
length is LH * 256 + LL. The data is treated as binary data with no translations.