24 SECURITY FUNCTION
365
24
24 SECURITY FUNCTION
This function serves to protect the user property stored in a personal computer and the user property inside modules in the
MELSEC iQ-R series system against threats such as theft, tampering, faulty operation, and unauthorized execution due to the
unauthorized access by an outsider. Use an appropriate security function according to the purpose as shown in the following
table:
*1 These functions disable the password authentication for a certain duration of time after a certain number of failed authentication
attempts. For details, refer to the manuals for each function.
(1) Protection is provided against theft, tampering, and faulty operation resulting from unauthorized access by an outsider. (Protection for user property on a
personal computer)
(2) Protection is provided against theft, tampering, faulty operation, and unauthorized execution resulting from unauthorized access by an outsider. (Protection
for user property in CPU modules)
Data to be protected Purpose Function Reference
GX Works3 Project Prevents unauthorized access to programs (in units
of POU). (A password is used.)
Block password function GX Works3 Operating Manual
Prevents unauthorized access to programs (in units
of program file). (A security key is used.)
Project data locked with a security key can only be
viewed with an engineering tool for which the same
security key has been registered.
Security key authentication
function for a project
CPU module Program Prevents unauthorized execution of programs. (A
security key is used.)
Programs locked with a security key can only be
executed at modules for which the same security
key has been set.
Security key authentication
function for a CPU module
Page 366 Security key
authentication for a CPU module
File Prevents unauthorized read and write of files. (A
password is used.)
File password function
*1
• GX Works3 Operating Manual
• MELSEC iQ-R Ethernet User's
Manual (Application)
• SLMP Reference Manual
• MELSEC iQ-R Serial
Communication Module User's
Manual (Application)
Access Blocks access from an invalid IP address by
identifying the IP address of an external device via
Ethernet.
IP filter function MELSEC iQ-R Ethernet User's
Manual (Application)
Restricts access via Ethernet that is taking a
different route from specific communication routes.
(A password is used.)
Remote password function
*1
GOT
(2)
(1)
User property
User property
Engineering tool
Personal computer
MELSEC iQ-R series system
Internet/
intranet
Personal computer (at another location)
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