Enhanced Plc Security 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 Enhanced PLC Security Mode
This function restricts connections to the built-in PLC from applications such as PLC on-board and GX Developer/GX Works2.
This function helps protect the assets in the built-in PLC.
Two modes are available in this function.
[PLC write protect mode, which inhibits only write operations by applications]
This mode prevents accidentally overwriting sequence programs and modifying device values when a sequence program is
monitored.
[PLC read/write protect mode, which inhibits write operations and monitoring operations by applications]
This mode protects sequence programs from being overwritten or read out by an unauthorized user.
While this function is used, one of the multi-projects can be set as the "E/U project". (The "E/U mode")
Using this project enables end users to create sequence programs to which a new jig or sensor is to be added. The other
sequence programs created by the MTB are protected from changing or deleting, because these projects are prohibited the
end users from being connected.
PLC write protect mode
Write to PLC
Read from PLC
PLC read/write protect mode
Write to PLC
Read from PLC
Applications
- PLC on-board
- GX Developer/GX Works2
(*) Read/write operations between the application and the machine tool builder project depend
on the enhanced PLC security mode settings.
IB-1501614-B
Machine tool builder project
Project 1
Project 2
Write to Read from
PLC PLC
E/U mode
602
Built-in PLC
End user project
Project 3
(*)
Write to Read from
PLC PLC