Cpu Access Password - Mitsubishi MELSEC QS Series User Manual

6
FUNCTIONS

6.3 CPU access password

(1) What a CPU access password is
To prevent incorrect operations from a GX Developer connected by mistake, the CPU
module authenticates access using a password.
This password for authenticating access is called as the CPU access password.
The CPU access password must be set in both the GX Developer project and the
CPU module.
When an operation changing control (for example, a program change) is executed
from GX Developer, the CPU module compares the GX Developer project and CPU
module passwords.
The operation from GX Developer is permitted only when the passwords match.
CPU access password
"ABC123"
Operation is possible because the Operation is not possible because the
CPU access password matches CPU access password does not match
CPU access password CPU access password
"ABC123" "DEF123"
GX Developer GX Developer
Project A Project B
Diagram 6.7 CPU access password
6
- 18 6.3 CPU access password