Telnet Function - Mitsubishi Electric MELSEC iQ-R C User Manual

Telnet function

This function executes the Shell command with a Telnet tool in a personal computer without using CW Workbench for a TCP/
IP network. This allows simple remote debugging (such as task information display and memory dumping) of a C intelligent
function module.
Using Telnet function
For using the Telnet function, the service/account needs to be set.
Page 33 Service/account setting function
■Account setting
This shows account settings set prior to the shipment (Initial settings).
• Login name: target
• Password: password
To prevent unauthorized access, change the password when using the Telnet function.
Precautions
■Available Shell commands
Shell commands of CW Workbench can be used. For details on the shell commands, refer to the manual of VxWorks.
■Number of connections
The same C intelligent function module cannot be connected by using multiple Telnet tools. Connect a Telnet tool to a C
intelligent function module on a 1:1 basis. When connecting another Telnet tool, make sure to close (disconnect) the Telnet
tool being connected.
■Shell command
Shell commands entered from the Telnet tool operate on task of priority 1.
Note the following when executing the command. System errors/stop (such as watchdog timer error) may occur in a C
intelligent function module.
• Make sure to check the command specifications before executing commands which occupy the CPU processing.
• For rebooting VxWorks, reset the CPU module, or turn the power OFF and ON. Do not reboot VxWorks by executing the
command (reboot) of VxWorks or pressing  + .
• Before executing a command in which arguments are included, make sure to check the command specifications/argument
specifications. (When executed without specifying those arguments, with the result that 0 is specified to an argument.) Do
not execute the close command with no argument specified. By doing so, a resource that is reserved in the VxWorks
system will be closed. When a command that shows the status of the module, such as the show command, is executed, the
module will be in the interrupt-disabled state for a long period of time, and any processing called from an interrupt routine is
not executed. As a result, an interrupt which occurs at the fixed interval may be delayed.
■Message display on Shell
A message issued by VxWorks during Telnet connection may be displayed on Shell. For the message of VxWorks, refer to the
manual and help of VxWorks.
1 FUNCTION
1.2 Ethernet Communication Function
1
25