Digital I/O; Digital I/O Port - Keithley 2651A Reference Manual

Model 2651A High Power System SourceMeter® Instrument Reference Manual
The following programming example illustrates how to prompt the user to press the EXIT (LOCAL)
key to abort the script, or any other key to continue it:
display.clear()
display.setcursor(1, 1)
display.settext("Press EXIT to Abort")
display.setcursor(2, 1)
display.settext("or any key to continue")
key = display.waitkey()
display.clear()
display.setcursor(1, 1)
if key == 75 then
display.settext("Test Aborted")
exit()
else
display.settext("Test Continuing")
end
The above code captures the key that is pressed by the operator. The key code value for the EXIT
(LOCAL) key is 75. If the EXIT (LOCAL) key is pressed, the script aborts. If any other key is pressed,
the script continues.

Digital I/O

Digital I/O port

The Keithley Instruments Model 2651A High Power System SourceMeter
input/output port that can be used to control external digital circuitry. For example, a handler that is
used to perform binning operations can be used with a digital I/O port.
Port configuration
The digital I/O port, a standard female DB-25 connector (shown below), is located on the rear panel.
2651A-901-01 Rev. A / March 2011
Figure 67: Digital I/O port
DIGITAL I/O
1
13
25
14
1 = Digital I/O #1 11 = Digital I/O #11
2 = Digital I/O #2 12 = Digital I/O #12
3 = Digital I/O #3 13 = Digital I/O #13
4 = Digital I/O #4 14 = Digital I/O #14
5 = Digital I/O #5 15-21 = Ground
6 = Digital I/O #6 22 = +5 V
7 = Digital I/O #7 23 = +5 V
8 = Digital I/O #8 24 = Output enable (OE)
9 = Digital I/O #9 25 = +5 V
10 = Digital I/O #10
Section 3: Functions and features
®
Instrument has a digital
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