YOKOGAWA WT210, User Manual, Page: 223 / 316

14-7
IM 760401-01E
Communication Commands 2 (System of Commands Complying to the IEEE 488.2-1992 Standard)
14
14.2.4 Responses
On receiving a query from the controller, this
instrument returns a response message to the
controller. A response message is sent in one of the
following two forms.
• Response consisting of a header and data
If the query can be used as a program message
without any change, a command header is attached
to the query, which is then returned.
Example INTEGRATE:MODE?<PMT>->
:INTEGRATE:MODE NORMAL<RMT>
• Response consisting of data only
If the query cannot be used as a program message
unless changes are made to it (i.e. it is a query-only
command), no header is attached and only the data
is returned. Some query-only commands can be
returned after a header is attached to them.
Example STATUS:ERROR?<PMT> -> 0,"NO ERROR"
<RMT>
When returning a response without a header
It is possible to remove the header from a response
consisting of a header and data. The
“
COMMunicate:HEADer
” command is used to do this.
Abbreviated form
Normally, the lower-case part is removed from a
response header before the response is returned to
the controller. Naturally, the full form of the header can
also be used. For this, the “ COMMunicate:VERBose ”
command is used. The part enclosed by [ ] is also
omitted in the abbreviated form.
14.2.5 Data
A data section comes after the header. A space must
be included between the header and the data. The
data contains conditions and values. Data is classified
as below.
Data Description
<Decimal> Value expressed as a decimal number
(Example: PT setting
->
CONFigure:SCALing PT:ELEMENT1 100
)
<Voltage><Current> Physical value
(Example: Voltage range
->
CONFigure:VOLTage:RANge 150V
)
<Register> Register value expressed as either binary, octal, decimal
or hexadecimal
(Example: Extended event register value
-> STATus:EESE #HFE )
<Character data> Specified character string (mnemonic). Can be selected
from { }
(Example: Selecting measurement mode
-> CONFigure:MODE {RMS|VMEan|DC} )
<Boolean> Indicates ON/OFF. Set to ON, OFF or value
(Example: Averaging ON
-> [CONFigure]:AVERaging[:STATe] ON )
<Character string data> Arbitrary character string
(Example: Timer
-> INTEGrate:TIMer " 1:00:00 " )
<Block data> Data containing 8-bit arbitrary values
(Example: Response of measured/computed data
(binary format) ->
#500012ABCDEFGHIJKL
)
<Decimal>
<Decimal> indicates a value expressed as a decimal
number, as shown in the table below. Decimal values
are given in the NR form specified in ANSI X3. 42-
1975.
Data Description Example
<NR1> Integer 125 -1 +1000
<NR2> Fixed point number 125.0 -.90 +001.
<NR3> Floating point number 125.0E+0 -9E-1 +.1E4
<NRf> Any of the forms <NR1> to <NR3> is allowed.
Decimal values which are sent from the controller to
this instrument can be sent in any of the forms <NR1>
to <NR3>. This is represented by <NRf>.
For response messages which are returned from this
instrument to the controller, the form (<NR1> to <NR3>
to be used) is determined by the query. The same
form is used, irrespective of whether the value is large
or small.
In the case of <NR3>, the “
+
” after the “
E
” can be
omitted, but the “
–
” cannot.
If a value outside the setting range is entered, the
value will be normalized so that it is just inside the
range.
If the value has more than the significant number of
digits, the value will be rounded.
14.2 Program Format