Hioki SW2001 Instruction Manual page 91

Separators
Command program header
Multiple messages can be written on a single line by connecting them with a semicolon (;).
Example:
:RELay:CH 1,HIGH;:RELay:CH 2,LOW
When messages are written in succession, if an error occurs midway, the message from there until the
terminator is not executed.
Header separator
For messages with a header and data, the header part and the data part are separated using a space.
Example:
:RELay:INPut IMPulse
Data separator
In messages containing multiple data items, a comma(,) is required between data items.
Example:
:RELay:CH 1,HIGH
Data part
The instrument uses "text data" and "base 10 numerical data" in the data part and differentiates these by
command.
Text data
Data that must start with an alphabetical character and is made up of alphabetical and numerical characters.
Text data is accepted in both upper case and lower case, but responses from the instrument are always
returned in upper case. There is a long form and a short form in the same way as command syntax, and both
are accepted.
Example:
:RELay:INPut IMPulse
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HIOKI SW2001A971-01