System Reserved Local Word Usage With Security - KEP MMI-1500 Installation & Operation Manual

7.9.4 System Reserved Local Word Usage with Security

This applies to User Security only.
Note: The Project Password is not stored in any user accessible memory location.
Internal Local Words LW9040~9043 are the reserved words for implementing security passwords.
Local Word Attribute
LW9040 - Write/Read
LW9041
LW9042 Read only
LW9043 Write only
7.9.5 System Reserved Retentive Word Usage with Security
This applies to User Security only.
The security passwords are stored in retentive
memory locations when the System
Parameter|Hardware, System Parameter
dropdown is set to Yes.
Note: This allows the security passwords
to be changed if access to them is
provided in the project.
They also are available for review if the
project is uploaded out of the HMI and
decompiled.
Retentive Word Description
Security Enable: 1: enables the security password feature, 0 disables it.
RW60071
Level 0 password (Lowest). 2 Word value
RW60072
Level 1 password (Middle). 2 Word value
RW60074
Level 2 password (Highest). 2 Word value
RW60076
Local Bit
Set to ON to activate Security Password System Parameter changes made in the Retentive Word area.
LB9044
The System automatically resets this bit to 0 when done.
Description
Double word, Different levels can be activated by changing the value in this register to a
corresponding security password. Contains the last password value.
Contains the current active security level.
Allows the project to force the HMI to a lower security level.
Note: A lower level cannot be forced to higher level.
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