Siemens MOBY FC 56 Technical Description page 51

Acknowledgment data in the DIR command
The user data contained in the acknowledgment in the DIR command are written to
the address parameterized in the command.
The "length" parameter contains the actual length of the read directory data. The
structure of the directory data is stored in UDT 220.
Table 4-16 UDT 220 "MOBY FH directory"
Address Name
0.0
+0.0 MDS_name
*1.0
+8.0 Checksum
+10.0 Free_space
+14.0 File
*0.0
+0.0 File_name
*1.0
+8.0 File_length_H
+9.0 File_length_I
+10.0 File_length_L
+11.0 Attribute
=12.0
=782.0
FC 56
J31069-D0155-U001-A0-7618
Type Commentary
STRUCT
ARRAY [1..8] Name of the MDS which was transferred for
FORMAT
CHAR
WORD Checksum automatically calculated and stored
in the system area of the MDS
DINT Free memory space remaining on the MDS
ARRAY [1..64] One MDS has a maximum of 64 files.
STRUCT
ARRAY [1..8] File name (8 ASCII characters)
CHAR
BYTE MSB
BYTE
BYTE LSB (Least Significant
Byte of the file
length)
BYTE File attribute (for meaning, see ATTRIB com-
mand)
END_STRUCT
END_STRUCT
MOBY Commands
Absolute file length g
4-21