Remote Password; Application - Mitsubishi Electric MELSEC-L SERIES Basic User Manual

14.4

Remote Password

The CPU module can be protected by a remote password.
A remote password is one method of preventing unauthorized access (such as program or data destruction) from external
devices. However, this function does not guarantee prevention of all unauthorized access. To have the programmable
controller system fully secured against unauthorized access from the external devices, take additional measures. Mitsubishi
Electric Corporation does not hold any responsibility for any system problems caused by unauthorized access.
The following are examples of measures against unauthorized access.
• Install a firewall.
• Install a personal computer as a relay station and control the relay of communication data using an application
program.
• Install an external device for which the access rights can be controlled as a relay station (Contact the network
provider or equipment dealer for details on the external devices for which access rights can be controlled.)
14.4.1

Application

This function allows or prohibits access from connected devices to the CPU module through the following modules.
This prevents remote unauthorized access to the CPU module.
• E71
• Built-in Ethernet port LCPU
• C24
CHAPTER 14 OTHER FUNCTIONS
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