YOKOGAWA wt1600, User Manual

Page: 31 / 162

4-6
IM 760101-11E
<Voltage>, <Current>, <Time>, <Frequency>
<Voltage>, <Current>, <Time> and <Frequency>
indicate decimal values which have physical
significance. <Multiplier> or <Unit> can be attached to
<NRf>. They can be entered in any of the following
forms.
Form Example
<NRf><Multiplier><Unit>
5MV
<NRf><Unit> 5E-3V
<NRf><Multiplier> 5M
<NRf>
5E-3
<Multiplier>
Multipliers which can be used are shown below.
Symbol Word Description
EX
Exa
10
18
PE
Peta
10
15
T Tera 10
12
G Giga 10
9
MA
Mega
10
6
K Kilo 10
3
M Mili 10
-3
U Micro 10
-6
N
Nano
10
-9
P Pico 10
-12
F Femto 10
-15
<Unit>
Units which can be used are shown below.
Symbol Word Description
V Volt Voltage
A Ampere Current
S
Second Time
HZ Hertz Frequency
MHZ Megahertz Frequency
<Multiplier> and <Unit> are not case sensitive.
“
U
” is used to indicate “
µ
”.
“ MA ” is used for Mega (M) to distinguish it from Mili,
except for in the case of Megahertz, which is
expressed as “ MHZ ”. Hence, it is not permissible to
use “
M
” (Mili) for Hertz.
If both <Multiplier> and <Unit> are omitted, the default
unit will be used.
Response messages are always expressed in <NR3>
form. Neither <Multiplier> nor <Unit> is used,
therefore the default unit is used.
<Register>
<Register> indicates an integer, and can be expressed
in hexadecimal, octal or binary as well as as a decimal
number. <Register> is used when each bit of a value
has a particular meaning. <Register> is expressed in
one of the following forms.
Form Example
<NRf>
1
#H<Hexadecimal value made up of the digits 0 to 9, and A to F> #H0F
#Q<Octal value made up of the digits 0 to 7> #Q777
#B<Binary value made up of the digits 0 and 1>
#B001100
<Register> is not case sensitive.
Response messages are always expressed as <NR1>.
<Character Data>
<Character data> is a specified string of character data
(a mnemonic). It is mainly used to indicate options,
and is chosen from the character strings given in { }.
For interpretation rules, refer to “Header Interpretation
Rules” on page 4-4.
Form Example
{AUTO|NORMal} AUTO
As with a header, the “
COMMunicate:VERBose
”
command can be used to return a response message
in its full form. Alternatively, the abbreviated form can
be used.
The “
COMMunicate:HEADer
” command does not
affect <character data>.
<Boolean>
<Boolean> is data which indicates ON or OFF, and is
expressed in one of the following forms.
Form Example
{ON|OFF|<NRf>} ON OFF 1 0
When <Boolean> is expressed in <NRf> form, OFF is
selected if the rounded integer value is “
0
” and ON is
selected if the rounded integer is “ Not 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 not a specified character
string like <Character data>. It is an arbitrary
character string. A character string must be enclosed
in single quotation marks ( ' ) or double quotation
marks (
"
).
Form Example
<Character string data> "ABC" "IEEE488.2-1987"
Response messages are always enclosed in double
quotation marks.
4.4 Data