Using CitectSCADA > Monitoring and Debugging Runtime > Using the Kernel > Using Kernel Commands

Using Kernel Commands

Commands are issued at a command line interface (similar to the DOS prompt), usually from the Main Kernel window. Some commands display their results in the Main Kernel window; others open a child window for information display (or for further commands). You can open a maximum of five windows at once.

You can use several keyboard keys to scan and reuse commands from the command history, to speed up the issuing of Kernel commands. (The command history is a list of commands that you have previously issued). These keyboard keys are listed below:

Key

Description

Up arrow

Scans backward through the command history. (Commands are displayed in the command line.)

Down arrow

Scans forward through the command history. (Commands are displayed in the command line.)

F3

Puts the last command you issued in the command line.

Left arrow

Moves the cursor back one character at a time (in the command line).

Right arrow

Moves the cursor forward one character at a time (in the command line).

Delete

Deletes the character to the right of the cursor (in the command line).

Backspace

Deletes the character to the left of the cursor (in the command line).

Insert

Switches from over-strike mode to insert character mode (in the command line).

Note: When typing a command in the Main window, if a message appears in the middle of your command, you can still execute the command normally. Use theShell command to open a new command window.

See Also