Keithley SourceMeter 2600B Series, Reference Manual

Page: 393 / 897

Section 7: TSP command reference Series 2600B System SourceMeter® Instrument Reference Manual
7-54 2600BS-901-01 Rev. C / August 2016
digio.readbit()
This function reads one digital I/O line. This function is not available on the Models 2604B/2614B/2634B.
Type TSP-Link accessible
Affected by Where saved Default value
Function Yes
Usage
data = digio.readbit( N )
data
The state of the I/O line
N
Digital I/O line number to be read (1 to 14)
Details
A returned value of zero (0) indicates that the line is low. A returned value of one (1) indicates that the
line is high.
Example
print(digio.readbit(4))
Assume line 4 is set high, and it is then read.
Output:
1.00
Also see
digio.readport() (on page 7-54)
digio.writebit() (on page 7-64)
digio.writeport() (on page 7-64)
Digital I/O port (on page 3-82)
digio.readport()
This function reads the digital I/O port. This function is not available on the Models 2604B/2614B/2634B.
Type TSP-Link accessible Affected by Where saved Default value
Function Yes
Usage
data = digio.readport()
data
The present value of the input lines on the digital I/O port
Details
The binary equivalent of the returned value indicates the value of the input lines on the I/O port. The
least significant bit (bit B1) of the binary number corresponds to line 1; bit B14 corresponds to line 14.
For example, a returned value of 170 has a binary equivalent of 000000010101010, which indicates
that lines 2, 4, 6, and 8 are high (1), and the other 10 lines are low (0).