Mitsubishi Electric MELSEC Q Series User Manual page 11

OPERATING INSTRUCTIONS
This section explains the precautions in the following order.
1) Precautions for network connection
2) Precautions for performance/specifications
3) Precautions for security
4) Precautions for tag function
5) Precautions for logging function
6) Precautions for user screen creating function
7) Precautions for other functions
8) Precautions for access to Web server module
9) Precautions for battery
10) Precautions for using CompactFlash card
11) Precautions for using redundant system
12) Precautions for using multiple CPU system
13) Precautions for using Java 7
14) Precautions for using dedicated instructions
Precautions for network connection
Precautions for performance and specifications
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(1) Infrastructure for Internet connection
For devices applicable to the Web server module for the Internet connection or
Internet service providers, refer to Section 2.4.
Note that Internet connection of the Web server module may not be available in
some regions or in some countries depending on the Internet infrastructure.
In this case, please consult your local Mitsubishi representative.
(2) Connection to mail server or FTP server
Powering on the programmable controller immediately after powering it off may
cause failure to connect to the mail server or FTP server. After powering it off,
wait for several minutes before turning it on.
(1) Performance of the Web server module and the system using the Web server
module.
Performance of the Web server module and the system using the Web server
module differs depending on the following factors.
Conduct verification by user prior to starting the system.
• Operating environment (personal computer, network, and the CompactFlash
card)
• Loading status of the network
• Sequence scan time
• Accessing status from a personal computer, terminal display, or intelligent
function module to the programmable controller CPU.
• Accessing status of the Web server module from outside.
• Settings of the Web server module
(2) Number of writes to standard ROM (flash ROM)
Data can be written to the same area of a standard ROM up to 100,000 times, and
there are some write restrictions (standard ROM drive life).
Refer to Section 3.1 REMARKS (1) for the life of the standard ROM drive and how
to check the used condition.
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