Hioki RM3542-50, Instruction Manual

Page: 125 / 234

9.5 Communication Methods
119
9
 Separators
(1) Message Unit Separator
Multiple message can be written in one line by separating them with semicolons ";"
• When messages are combined in this way and if one command contains an error, all sub-
sequent messages up to the next terminator will be ignored.
• A query error occurs if a query command is combined with an immediately following semi-
colon and subsequent command.
(2) Header Separator
In a message consisting of both a header and data, the header is separated from the data by
a space " " (ASCII code 20H).
(3) Data Separator
In a message containing multiple data items, commas are required to separate the data items
from one another.
 Data Formats
The instrument uses "Character Data" and "Decimal value data", distinguished based on the
command.
(1) Character Data
Always starts with an English alphabets and consists of alphabets and numbers. Character
data is not case-sensitive, although the response messages from the instrument are only in
capital letters.
(2) Decimal Numeric Data
Three formats are used for numeric data, identified as NR1, NR2 and NR3. Numeric values
may be signed or unsigned. Unsigned numeric values are handled as positive values.
Values exceeding the precision handled by the instrument are rounded to the nearest valid
digit.
•
NR1 Integer data(e.g.: +12, -23, 34)
•
NR2 Fixed-point data(e.g.: +1.23, -23.45, 3.456)
•
NR3 Floating-point exponential representation data (e.g.: +1.0E-2, -2.3E+4)
Formats which include these three types are called "NRf format".
The instrument accepts NRf format data.
The format of response data is specified for each command, and the data is sent in that for-
mat.
:ESE0 106
:FETCH?
+106.571
The instrument does not fully support IEEE 488.2. As much as possible, please use the data
formats shown in the Reference section.
Also, avoid constructing single commands that could overflow the input buffer or output
queue.
:SYSTEM:LFREQUENCY 60;*IDN?
:SYSTEM:HEADER OFF
:CALCULATE:LIMIT:ABS 1.00035,0.99965
:SYSTEM:HEADER OFF