Specifications Of Modem Function; Applicability Of Remote Password Function - Mitsubishi Electric MELSEC iQ-R Series User Manual

7.3

Specifications of Modem Function

This section explains the applicability to the remote password function, input/output signals and buffer memory related to the
modem function.

Applicability of remote password function

The following explains C24 data communication for the remote password function of the CPU module.
For an overview of the C24 check function for the CPU module remote password, refer to the following section.
Page 150 Remote password check
Precautions
The remote password function cannot prevent improper access completely.
Incorporate the user's own safeguards when it is necessary to protect the security of the programmable controller system
from improper access from an external device.
The company cannot assume any responsibility for any problems that may arise from system troubles caused by improper
access.
■Countermeasures for preventing unauthorized access
• Set the firewall.
• Install a personal computer as a relay station and control the relay station of the transmission/receive data using application
programs.
• Install an external device whose access authority can be controlled.
For the external devices whose access authority can be controlled, contact the network provider or distributor of devices.
7 COMMUNICATIONS BY THE MODEM FUNCTION
7.3 Specifications of Modem Function
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