E/U Mode - Mitsubishi Electric M800VW Series Manual

M800V/M80V Series PLC Development Manual
9 Appendix 3: PLC Function
9.1 Enhanced PLC Security Mode

9.1.1.5 E/U mode

In the E/U mode, one of the multi-projects can be set as the "E/U project".
The E/U project can be connected with PLC on-board and GX Developer/GX Works2 irrespective of the enhanced PLC
security mode setting and the password status. The connection restrictions between non-E/U project (MTB projects) and the
applications depend on the enhanced PLC security mode setting and password status.
This allows end users to create custom sequence programs (E/U programs) in the E/U project and to create necessary control
programs when a new jig or sensor is added. The end users, however, are prevented from modifying and deleting sequence
programs created by the MTB (MTB programs) because connection restrictions are effective for MTB projects.
Note that different restrictions than the enhanced PLC security mode apply to the connection with the E/U project. For details,
refer to "Limitations of E/U Project" described later.
The MTB can set whether the E/U mode is enabled and which project number is used for the E/U project via parameters. End
users cannot change these settings.
To enable the E/U mode, the enhanced PLC security mode must be set to the PLC write protect mode or the PLC read/write
protect mode. When the enhanced PLC security mode is not set, the E/U mode cannot be enabled.
Note
(1) To enable the E/U mode, change the default password for MTB to another one. The following changes can be made on
the protect setting screen.
- Changing operation level
- Changing MTB password for each operation level
- Changing protective level for each data
For details on the protect setting screen, refer to "Connection and Setup Manual".
Built-in PLC
Read/write protect mode
Project 1
MTB Project
Read/write operations to
MTB projects are inhibited
in enhanced security mode
PLC on-board
Project 2
MTB Project
Read/write operations to
E/U project are allowed in
enhanced security mode
GX Developer/
GX Works2
605
Project 3
E/U Project
IB-1501614-B