Access Authentication Function - Mitsubishi Electric QJ81DL96 User Manual

10
OTHER FUNCTIONS

10.4 Access Authentication Function

A function to perform authentication by user name and password when accessing the high
speed data logger module.
To perform access authentication, configure the account setting ( Section 11.4.6).
Access authority can be selected from 3 levels (Administrator, Maintenance user, Normal
user) as shown in the following figure.
High speed data
logger module
POINT
The access authentication function is one of the methods for preventing illegal
access (such as program or data corruption) from an external device. However,
this function does not prevent illegal access completely.
Incorporate measures other than this function if the programmable controller
system's safety must be maintained against illegal access from an external
device. Mitsubishi Electric Corporation cannot be held responsible for any system
problems that may occur from illegal access.
Examples of measures for illegal access are shown below.
• Install a firewall.
• Install a personal computer as a relay station, and control the relay of
send/receive data with an application program.
• Install an external device for which the access rights can be controlled as
a relay station. (For details on the external devices for which access
rights can be controlled, consult the network provider or equipment
dealer.)
Can use all
functions
Can read/delete
files
Can only read
files
10.4 Access Authentication Function
10
11
Administrator
12
Maintenance user
13
Normal user
14
15
16
10
- 12
9