6
FUNCTIONS
6.19 System Protect
6.19.2 Remote password
6 - 151
1
Overview
2
Performance
Specification
3
Sequence Program
Configuration and
Execution Conditions
4
I/O Nunber Assignment
5
Memories and Files
Handled by CPU Module
6
Functions
7
Communication using
built-in Ethernet ports of
CPU module
8
Communication with
Intelligent Function
Module
(3) Modules that support remote password setting
The following modules support remote password setting.
• Serial communication module
• Ethernet module
• Modem interface module
• Built-in Ethernet port QCPU
POINT
For details on the remote password of Built-in Ethernet port QCPU, refer to
Section 7.7.
(4) Remote password lock/unlock processing
Unlock the remote password of the serial communication module via a modem or that
of the Ethernet module via Ethernet.
When the remote password is matched, this enables the access to the CPU module.
Figure 6.88 Outline of remote password lock/unlock processing performed for Ethernet module
Ethernet module
GX Developer
The remote password is
transmitted to Ethernet
module when the PLC is
powered OFF and then ON
or the reset switch is set to
the neutral position.
A check is run on the
remote password
GX Developer
Ethernet
Unlocks remote password and accesses
CPU module.
When line is closed, remote password lock
processing is executed.
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