Mitsubishi Electric MELSEC Q Series User Manual page 198

Described below is the procedure to change the Telnet connection (TCP connection) timeout time for the
running C Controller module.
1.
Establish Telnet connection by a Telnet tool.
2.
Execute the commands above from the Telnet tool shell command to change the timeout time and
reboot the Telnet server
3.
Close the Telnet connection.
4.
Establish Telnet connection by a Telnet tool again.
Described below is the procedure to change the Telnet connection (TCP connection) timeout time at the startup
of the C Controller module.
1.
Describe the commands above in the script file (STARTUP.CMD).
2.
Power on the C Controller module.
(c) Shell command
Shell commands entered from the Telnet tool are operated for Priority1 tasks.
In the following cases, system errors/stop (system watchdog timer error, etc.) may occur in the C Controller
module.
• Execution of commands occupying CPU processing
Before executing commands, be sure to check command specifications.
• Reboot by execution of VxWorks (reboot) function and entering +
Reset the C Controller module to reboot VxWorks.
• Execution of command with argument without argument specification (i.e. 0 is specified for argument)
Before executing commands, be sure to check command specifications/argument specification.
[Example] Do not execute the (close) command with no argument specified. Doing so will close the
In any of the following cases, interrupt is prohibited for long period of time and no processing called from the
interrupt routine will be performed. So interrupt that occurs at certain intervals (i.e. synchronization interrupt
between multiple CPUs) may be delayed.
• Execution of command to show the status (Show)
(d) Message display on the shell
Message(s) issued by VxWorks during Telnet connection may be displayed on the shell.
For messages to VxWorks, refer to manuals for VxWorks, and Help of CW Workbench.
(e) Telnet password
If you forgot your Telnet password, initialize the C Controller module.
Initialization restore the factory account settings of the system. For details, refer to the following.
Page 62, Section 6.1
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resources reserved in the VxWorks system.