Mitsubishi Electric MELSEC-Q00U(J)CPU User Manual page 311

(1) SLMP/MC protocol
An error occurs when the following operations are performed to devices in the write-protected range from an
external device such as a personal computer via the SLMP/MC protocol: writing/clearing of device data,
writing/changing of the initial device value file or file register file.
An error also occurs when the following commands are executed in the predefined protocol support function or
the SLMP frame send instruction.
• Writing or clearing device data by using the SLMP/MC protocol
Classification
Writing to device
Clearing device
• Writing or changing the initial device value file or file register file by using the SLMP/MC protocol
Classification
Writing to file
File change
*1 The operation cannot be performed only when the open mode is for writing (0100H).
*2 The operation cannot be performed only when the extension is changed to QDI (initial device value) or QDR (file
register). (Subcommand: 0001, 0002)
For details on commands, refer to the following.
SLMP Reference Manual
MELSEC Communication Protocol Reference Manual
Operation
Batch write
Random write (Test)
Multiple blocks batch write
Remote RUN when clearing is
specified in the clear mode
Remote latch clear
Operation
New file creation
File copy
File open
File information modification
File write
Command
SLMP and
4C/3C/4E/3E 2C frame
frame
3
1401
4
6
1402
7
1406 -
1001 -
1005 -
Command
SLMP and 4C/3C/4E/3E frame
1827
1204
CHAPTER 3 FUNCTIONS
1C frame 1E frame
BW JW 02H
WW QW 03H
BT JT 04H
WT QT 05H
- - -
- - -
- - -
1820
1202
1824
1206
*1
*2
1829
1203
309
3