Mitsubishi Electric MELSEC Q Series User Manual page 175

4 SET-UP AND PROCEDURE BEFORE OPERATION
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2) IP filter setting
(5) Precautions for IP filter setting
(a) When using a mail server, FTP server, DHCP server, DNS server or router,
do not set the IP addresses of these devices to "Block".
If it is blocked, communication with the corresponding device is disabled.
(b) When a proxy server exists on the LAN, block the IP address of the proxy
server.
When the IP packet from the proxy server is passed, access to the Web
server module can be made from any personal computer accessible to the
proxy server, independently of the other settings.
(c) When making access from a personal computer on the LAN to the Web
server module, do not use a proxy server.
POINT
(1) After changing the settings, make sure to click on the "Save" button.
The settings in IP filter setting are updated when the programmable controller is
powered off and then on, or the CPU module is reset.
(2) Depending on the IP filter settings, access to the Web server module may not be
made.
In such a case, make default operation setting by the switch setting of GX
Developer, and make the setting again.
Refer to Section 4.7 for the switch setting of GX Developer.
(3) Changing the default port No. (Refer to Section 4.6.3.) and configuring the IP
filter setting is recommended for Internet connection.
MELSEC-Q
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