Mitsubishi Electric MELSEC iQ-R Series User Manual page 271

■Structure of directory information
The following section shows the structure of each directory information item.
Directory information of the amount specified by the number of directory entries is assigned.
The entry of each directory information item is linked and defined by each directory entry of the directory entry information
table.
The following directory information items must be initialized when the equipment is started.
The current process program ID retained by the equipment is set to PPID.
Item
PPID
ChangeStatus
Host delete instruction
Selection state
DSNAME
UIDStatus
RECLEN
RTYPE
ACK
*1 Items reserved for future functions. Initialize using "0" at equipment startup processing.
Size (Word)
41
1
1
1
17
1
1
1
1
9 SECS/GEM COMMUNICATION SOFTWARE KNOWLEDGE
Description
Process program ID
0: no change
1: creation
2: modification
3: deletion
0: no instruction
1: instruction
0: no selection
1: selected
*1
Data set name
0: none
1: upload
*1
2: download
*1
Directory maximum record length
0: stream
*1
1 = discrete
*1
ACK during upload/download
9.17 Using the Process Program
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