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17 SECURITY FUNCTION
17 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:
• Only the SIL2 Process CPU and Safety CPU support the user authentication 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
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
Restricts access to projects on the personal computer
with a combination of user name and password. The
security level can be set individually for each user.
User authentication function
CPU module 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
Restricts access to projects in the CPU module with a
combination of user name and password. The security
level can be set individually for each user.
User authentication function
Prevents unauthorized read and write of files.
(A password is used.)
File password function • 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)
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)
Limits access to just specific communication routes via
Ethernet. (A password is used.)
Remote password function
RnCPU
RnENCPU
RnSFCPU RnSFCPU
RnPSFCPU RnPSFCPU
RnPCPURnPCPU
(Standard) (Safety)(Standard) (Safety)
(Redundant)
(Process)
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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