GW Instek PSM-Series Programming Manual - Manual (Page 7)

PSM SERIES PROGRAMMABLE POWER SUPPLY
PROGRAMMER MANUAL
⎯ 11 ⎯
Leaf Node
Command Header
The command header has a hierarchical structure that can be represented by
a command tree (Figure 4).
The top level of the tree is the root level. A root node is located 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.
Figure 4: Tree hierarchy
The command header is configured by header path and leaf node. Figure 5
shows the command header for the leaf node indicated in Figure 4.
Figure 5 Command Header
Leaf
:SYSTem Root node
:ERRor
:STAT
e
:AUTO
:STARt :CYCL
e
Lower-level node
PSM SERIES PROGRAMMABLE POWER SUPPLY
PROGRAMMER MANUAL
⎯ 12 ⎯
Parameter
If the commands have parameters, the values have to be included. In this
manual, when we expressed the syntax of the command, the < > symbols
are used for enclosing the parameter type. For instance, the syntax of the
command in Figure 6 includes the Boolean parameter type.
NOTE: Do not include the <, >, or | symbols when entering the actual
value for a parameter.
Figure 6 Command Header with Parameter
Message Terminator and Message Separator
z GPIB message terminators
In accordance with IEEE 488.2 standard, any of the following message
terminators are acceptable:
z LF ^ END Line feed code (hexadecimal 0A) with END
message
z LF Line feed code
z ^ END Last data byte with END message
These terminators are compatible with most application programs. A
semicolon separates one command from another when the commands
appear on the same line.