App 2-7
IM CW120-E
Communication Commands
App
Appendix 2. Communication Commands
• Response messages are always expressed
in the <NR3> form. The default unit is used
without the <Multiplier> or the <Unit>.
<Character Data>
<Character data> is a data of specific
characters (mnemonic). It is mainly used to
indicate options and is chosen from character
strings given in { }. For interpretation rules, see
"Rules of Header Interpretation."
Form Example
{V1 | V2 | V3} V1
• As with the header, the COMMunicate:
VERBose command can be used to select a
full response or an abbreviated response.
• The COMMunicate:HEADer command has
no effect on <character data>.
<Boolean>
<Boolean> is a type of data that indicates ON or
OFF, and is expressed in one of the following
forms.
Form Example
{ON|OFF|<NRF>} ON OFF 1 0
• When expressing <Boolean> in <NRf> form,
OFF is selected if the rounded integer value is
"0" and ON is selected if the rounded integer
is "non 0."
•A response message is always "1" if the value
is ON and "0" if it is OFF.
<Character String Data>
<Character string data> is an arbitrary
character string unlike the <character data>,
which uses only specific characters. The
character string must be enclosed in single
quotation marks (') or double quotation marks
(").
Form Example
<Character string data>
'ABC' "IEE488.2-1987"
•If a character string contains a double
quotation mark ("), use two double quotation
marks (" ") to indicate it. This rule also applies
to a single quotation mark (') within a
character string.
• Response messages always use double
quotation marks (") around the character
string.
• Since <Character string data> is an arbitrary
character string, leaving the end single
quotation mark (') or double quotation mark
(") will cause the CW120 to interpret the
program message unit as part of the
<character string data>. As a result, errors
may not be detected properly.
<Filename>
<Filename> is data that denotes a file name. It
is expressed in one of the following forms.
Form Example
{ <NRf>|<Character data>|<Character string data>} 1 CASE "CASE"
• In the <NRf> form, a file name is an ASCIII
code obtained by rounding an 8-digit value
into an integer (for example, "1" denotes
"00000001."). A negative value is not
allowed, however.
• In the <character data> or <character string
data> form, a file name is the first eight
characters.
•A response message is always returned in
the <character string data> form.
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