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4.15 Telnet Function
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(c) When executing a Shell command from the Telnet tool
The Shell commands entered by the Telnet tool of the development environment
(personal computer) operate on the tasks of the following priorities
When using a Shell command, pay attention to the following.
• Only alphanumeric characters and special characters can be used.
• Some commands, such as those exclusively using the CPU module and
those including characters other than alphanumeric characters and special
characters, may be regarded as a command causing a watchdog timeout
error, a control code (such as "CTRL + X"), or being garbled. As a result, a
system error, such as a system watchdog timer error, or stop may occur in the
C Controller module. Pay full attention to the command when entering it.
• Some commands (example: the status-indicating Show command) may
disable an interrupt for a long time.
During that time, processing called from an interrupt routine (interrupt
program) (example: bus interface functions for ISR) is not executed.
Interrupts that are expected to occur at fixed intervals, such as multiple CPU
synchronous interrupts, may delay. Be careful when executing a command.
For precautions for program debugging, refer to the following.
C Controller Module User's Manual (Utility Operation, Programming)
A VxWorks message may appear on the Telnet tool screen during a Telnet
connection to the C Controller module.
For messages of VxWorks, refer to manuals for VxWorks, Workbench, or
Tornado.
(d) Execution of VxWorks reboot command
Do not reboot VxWorks by executing the reboot function or pressing the CTRL + X
keys
*1
. If VxWorks is rebooted, the C Controller module does not start properly.
Reset it on the C Controller module. For resetting, refer to the following.
* 1 Do not enter characters other than alphanumeric characters or special characters in Shell either
since they may be regarded as a control code.
(e) Command execution without argument specification
If no argument is specified for a command with an argument, the command will be
executed with 0 specified as the argument.
Some commands may cause a system error (such as a system watchdog timer
error) or a stop in the C Controller module.
Before executing a command, check the specifications and arguments of the
command.
(f) Precautions for program debugging
For precautions for debugging programs with the Telnet function, refer to the
following manual.
C Controller Module User's Manual (Utility Operation, Programming)
C Controller module
Priority
Q12DCCPU-V
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Q06CCPU-V(-B)
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Example) Do not execute the "close" command with no argument specified.
Doing so will close the resources reserved in the VxWorks system.
Содержание Q06CCPU-V
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