Security Function; Password Registration - Mitsubishi Electric Q01UCPU User Manual

3.19

Security Function

This function protects data in the CPU module against tampering and theft by unauthorized persons. There are four
security functions available. Use those functions according to your applications and needs.
Function
*1

Password registration

*2
File password 32
File access control by
*2
security key
Remote password
Block password
*1 The High-speed Universal model QCPU does not support this function.
*2 Only the High-speed Universal model QCPU support these functions.
3.19.1
Password registration
This function disables reading and writing data, such as programs and device comments, in the CPU module using a
programming tool.Note 3.12
(1) Password target files
A password can be set to the following files.
• Program
• Device comment
• Initial device value
(2) Operations that are controlled and the number of characters
A password can be set to the following operations. The number of characters in the password should be four
(one-byte).
• Reading files
• Writing files
Remark
For characters allowed in passwords, refer to "Explanation of Registration Conditions" on the Input Password window.
Note 3.12
Universal
The High-speed Universal model QCPU does not support this function.
204
To limit access to each file in the CPU module
To limit devices that can access to files in the CPU module
To limit access to the CPU module from external devices
To limit access to each POU
Purpose
Note 3.12
Reference
Page 204, Section 3.19.1
Page 206, Section 3.19.2
Page 211, Section 3.19.3
Page 216, Section 3.19.4
GX Works2 Version 1
Operating Manual
(Common)