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7.7 Remote Password
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COMMUNICATION USING BUILT-IN ETHERNET
PORTS OF CPU MODULE
(2) Remote password setting
Setting method for remote password is described below.
(a) Setting remote password and writing parameters to CPU module
Set the remote password and the connection target in GX Developer and write the
parameter settings to the CPU module.
* 1 : Characters that can be used for remote passwords are one-byte alphanumeric characters and
one-byte special characters. (Case-sensitive)
Refer to the following when setting a remote password.
• Avoid using character strings having simple numbers or letters only.
• Combine numbers, letters, and special characters.
• Avoid using character strings, including user's name or date of birth.
* 2 : To enable the remote password for the port for which the open system is set to "MELSOFT
connection" in PLC parameter, check the checkbox as follows.
• When protocol is set to "TCP", check "MELSOFT transmission port (TCP/IP)".
• When protocol is set to "UDP", check "MELSOFT transmission port (UDP/IP)".
* 3 : When connecting GOT with the Built-in Ethernet port QCPU via Ethernet, do not check
"MELSOFT transmission port (UDP/IP)".
Figure 7.29 Screens for setting remote password
Table7.10 Setting items on the screens for setting remote password
Item
Description
Setting range
Password settings
Enter the remote password to be set in the QCPU.
*1
Up to four one-byte characters
Password
active
module
settings
Model name
Select the CPU model to enable the remote password for built-in
Ethernet ports of the QCPU module.
Only one CPU model is available.
QnUDE(H)CPU
Condition
Click this to display the Remote password detail settings screen.
Detail
User
connection
No.
Connection 1 to 16
Select the connection port for which the remote password is to be
enabled.
(Setting to the unused connection or to the MELSOFT connection
is ignored.)
Check the checkbox of target
connection.
System
connection
MELSOFT transmission port (TCP/IP)
*2
Select the connection port for which the remote password is to be
enabled.
MELSOFT transmission port (UDP/IP)
*2*3
FTP transmission port (TCP/IP)
MELSOFT direct connection
Get an error when remote password mismatch count
reaches the upper limit
Check the checkbox to perform this operation.
(To detect unauthorized access.)
Mismatch limit
Set the number of mismatch limits.
1 to 65535
Clear mismatch count when remote password matches
Check the checkbox to perform this operation.
(To ignore the entry error.)
Check the checkbox of target
connection.
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