Mitsubishi Electric Q12DCCPU-V - Login User Setting and Restriction; Functions that Can be Restricted by Login User Setting

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6.11 Login User Setting and Restriction
6.11.1 Functions that can be restricted by login user setting
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PREPARATORY PROCEDURES AND SETTING
6.11 Login User Setting and Restriction
File access by FTP and operations from each utility can be restricted by setting a user
name and password and starting it by the authorized login user.
POINT
The login user setting and restriction are 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 C 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.)
6.11.1 Functions that can be restricted by login user setting
The C Controller module can restrict the functions listed below.
For details, refer to each reference section shown in the table.
* 1 C Controller Module User's Manual (Utility Operation, Programming)
Table 6.23 Functions that can be restricted by login user setting
Function
Access restriction Reference
section
When logged in When not logged in
FTP
/RAM (standard RAM) Read/write enabled Access disabled
*1
/ROM (standard ROM) Read/write enabled Access disabled
/CF (CompactFlash card) Read/write enabled Access disabled
/SYSTEMROM (system drive) Read only enabled Access disabled
Operation from C Controller setting utility Not restricted
Parameter writing from
<<Online operation>>
tab is disabled.
*1
Operation from CC-Link utility Not restricted *1
Operation from MELSECNET/H utility Not restricted *1
Operation from CC IE Control utility Not restricted *1
Operation from Device monitoring utility Not restricted
Telnet function Not restricted Access disabled
Page 4-48,
Section 4.15
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