Filter
Top Products
Chapter 6 Interactive Control Utility
© National Instruments Corporation 6-5 NI-488.2 User Manual for Windows
Special symbols—Some instruments require special termination or
end-of-string (EOS) characters that indicate to the device that a
transmission has ended. The two most common EOS characters are
\r
and
\n
.
\r
represents a carriage return character and
\n
represents a linefeed
character. You can use these special characters to insert the carriage return
and linefeed characters into a string, as in
"*IDN?\r\n"
.
Address Syntax
Some of the NI-488.2 calls have an address or address list parameter. An
address is a 16-bit representation of the GPIB device address. The primary
address is stored in the low byte and the secondary address, if any, is stored
in the high byte. For example, a device at primary address 6 and secondary
address 0x67 has an address of 0x6706. A
NULL
address is represented as
0xffff. An address list is represented by a comma-separated list of
addresses, such as
1,2,3
.
Interactive Control Commands
Tables 6-1 and 6-2 summarize the syntax of the traditional NI-488.2 calls
in the Interactive Control utility. Table 6-3 summarizes the syntax of the
multi-device NI-488.2 calls in the Interactive Control utility. Table 6-4
summarizes the auxiliary functions that you can use in the Interactive
Control utility. For more information about the function parameters, use the
online help, available by typing in
help
. If you enter only the function
name, the Interactive Control utility prompts you for parameters.
Table 6-1.
Syntax for Device-Level Traditional NI-488.2 Calls in Interactive Control
Syntax Description
ibask option
Return configuration information where
option
is a mnemonic for a
configuration parameter
ibbna bname
Change access interface of device where
bname
is symbolic name of
new interface
ibclr
Clear specified device
ibconfig option
value
Alter configurable parameters where
option
is mnemonic for a
configuration parameter
ibdev BdIndx pad
sad tmo eot eos
Open an unused device;
ibdev
parameters are
BdIndx pad sad tmo
eot eos