Mitsubishi Electric Q12DCCPU-V User Manual page 277

9
PROGRAMMING USING BUS INTERFACE
FUNCTIONS
The Shell commands entered by the Telnet tool of the development
environment (personal computer) operate on the task of priority 1 in the C
Controller module.
Pay full attention to the command when entering it.
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 the 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 interrupt, may delay. When executing a command, pay
attention to the above.
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 the manual for VxWorks or Workbench.
3) When executing the Shell command from Workbench Shell or the Telnet tool
• Execution of VxWorks reboot command
Do not reboot VxWorks by executing the reboot function or pressing the
*1
CTRL + X keys.
If VxWorks is rebooted, the C Controller module does not start properly.
Reset it in the C Controller module.
For resetting, refer to the C Controller Module User's Manual (Hardware
Design, Function Explanation).
* 1 Do not enter characters other than alphanumeric characters or special characters in Shell either
since they may be regarded as a control code.
• Execution of command without argument specified
If a command that requires an argument is executed without any
argument specified, 0 is substituted for the argument. A system error or
stop (such as a system watchdog timer error) may occur in the C
Controller module depending on the command (example: command that
occupies CPU processing).
Before executing a command, confirm the specifications and specified
argument of the command.
Example)
Do not execute the "close" command without an argument. If executed,
the resource reserved in the VxWorks system will be closed.
9.7 Precautions for Program Debugging
9.7.1 For Q12DCCPU-V
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