Hioki SW9001, Instruction Manual

Page: 79 / 170

75
Communication Method
Compound command header omission
For several commands having a common header are combined to form a compound command,
if they are written together in sequence, the common portion can be omitted after its initial
occurrence.
This common portion is called the “current path” (analogous to the path concept in computer file
storage), and until it is cleared, the interpretation of subsequent commands presumes that they
share the same common portion.
This usage of the current path is shown in the following example:
Full expression
:SYSTem:MODule:WIRE:MODE 1,WIRE2;:SYSTem:MODule:WIRE:MODE 2,WIRE2
Compacted expression
:SYSTem:MODule:WIRE:MODE 1,WIRE2;MODE 2,WIRE2
This portion becomes the current path and can be omitted from the messages immediately following.
The current path is cleared in the following circumstances.
• When the power is turned on
• Key reset
• A colon (
:
) is entered at the start of the command.
• Message terminator detection
Standard command messages can be executed regardless of the current path.
They have no effect upon the current path.
A colon (
:
) is not required at the start of the header of a simple or compound command. However,
to avoid confusion with abbreviated forms and operating mistakes, Hioki recommends to always
place a colon (
:
) at the start of a header.
8
Communication Function
HIOKI SW1001A961-04