Syntax

Command Headers The command header has a hierarchical structure that may be represented by a command tree (see Figure 3±3). An easy-to-remember word called a mnemonic designates each level of the hierarchy. A colon separates the levels.

The top level of the tree is the root level. A root node is a mnemonic at the root level. A root node and one or more lower-level nodes form a header path to the last node called the leaf node.

 

 

:STATus

 

 

 

 

 

Root node

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Lower-level

 

 

 

 

 

 

 

 

 

 

 

OPERation

QUEStionabl￿

...

 

 

 

 

 

 

 

 

 

 

 

 

 

 

nodes

 

 

 

 

 

 

 

 

 

 

 

...

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Leaf nodes

 

 

 

 

 

 

 

 

[EVENt]?

ENABl￿

ENABl￿?

...

Figure 3±3: Tree hierarchy

The header path and leaf node together form the command header. Figure 3±4 shows the command header for the leaf node indicated in Figure 3±3.

:STATus:QUEStionabl￿:ENABl￿

Root Node

Header Path

Leaf Node

Command Header

Figure 3±4: Command header

Parameter You must include values for commands that have parameters. In this manual, the

<> symbols enclose the parameter type when stating the syntax of the com- mand. For example, the syntax of the command in Figure 3±5 includes the  parameter type.

:STATus:OPERation:ENABl￿ <NRf>

Parameter

Type

Space

Figure 3±5: Command header with parameter

3±22

VX1410A & VX1420A IntelliFrame Mainframe Instruction Manual