Model DMM7510 7½ Digit Graphical Sampling Multimeter Reference Manual
Section 6: SCPI command reference
DMM7510-901-01 Rev. B / May 2015
6-41
:DIGital:READ?
This command reads the digital I/O port.
Type
Affected by
Where saved
Default value
Query only
Not applicable
Not applicable
Not applicable
Usage
:DIGital:READ?
Details
The binary equivalent of the returned value indicates the value of the input lines on the digital I/O port.
The least significant bit (bit B1) of the binary number corresponds to digital I/O line 1; bit B6
corresponds to digital I/O line 6.
For example, a returned value of 42 has a binary equivalent of 101010, which indicates that lines 2, 4,
6 are high (1), and the other lines are low (0).
An instrument reset does not affect the present states of the digital I/O lines.
All six lines must be configured as digital control lines. If not, this command generates an error.
Example
:DIG:READ?
Assume lines 2, 4, and 6 are set high when
the I/O port is read.
Output:
42
This is binary 101010
Also see
(on page 3-57)
Digital I/O port configuration
(on page 3-49)