Mitsubishi Electric M800VW Series Manual page 241

M800V/M80V Series PLC Development Manual
5 Peripheral Development Environment (GX Works2)
5.12 File Password Function
 Behavior after a CNC is formatted
When a file protected by a password is read to GX works2 from a CNC, and then the file is written to the same CNC again
after formatting the CNC, the password of the file is canceled.
When GX Developer is used in the same situation, the password retains for the file in the CNC.
When you use GX Works2, make sure not to forget to register a password again after write to PLC.
When no password is registered to the file, the bit values of the special registers SD553 to SD556 corresponding to the
project are "1". (Refer to "5.12.5 Checking the File Password Registration Status")
[Behavior of GX Developer]
1. Read a file protected by a password to GX Developer from a CNC.
The file including password is read.
GX Developer
Sequence program A
Password
2. Format the CNC.
GX Developer
Sequence program A
Password
3. Write the file to the CNC from GX Developer.
GX Developer
Sequence program A
Password
[Behavior of GX Works2]
1. Read a file protected by a password to GX Works2 from a CNC.
The file is read, but the password is not read.
GX Works2
Sequence program A
2. Format the CNC.
GX Works2
Sequence program A
3. Write the file to the CNC from GX Works2.
GX Works2
Sequence program A
IB-1501614-B
CNC
Read from PLC
Sequence program A
Password
Execute memory format.
CNC
The file including the password is written.
CNC
Write to PLC
Sequence program A
Password
CNC
Read from PLC
Sequence program A
Password
Execute memory format.
CNC
The file is not protected by password.
CNC
Write to PLC
Sequence program A
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