14: TSP command reference 2470 High Voltage SourceMeter Instrument
14-52 2470-901-01 Rev. A / May 2019
digio.line[N].mode
This attribute sets the mode of the digital I/O line to be a digital line, trigger line, or synchronous line and sets the
line to be input, output, or open-drain.
Type TSP-Link accessible Affected by Where saved Default value
Attribute (RW) Yes Restore configuration
Instrument reset
Configuration script digio.MODE_DIGITAL_IN
Usage
lineMode = digio.line[N].mode
digio.line[N].mode = lineMode
The digital line control type and line mode:
Digital control, input: digio.MODE_DIGITAL_IN
Digital control, output: digio.MODE_DIGITAL_OUT
Digital control, open-drain: digio.MODE_DIGITAL_OPEN_DRAIN
Trigger control, input: digio.MODE_TRIGGER_IN
Trigger control, output: digio.MODE_TRIGGER_OUT
Trigger control, open-drain: digio.MODE_TRIGGER_OPEN_DRAIN
Synchronous master: digio.MODE_SYNCHRONOUS_MASTER
Synchronous acceptor:
digio.MODE_SYNCHRONOUS_ACCEPTOR
The digital I/O line: 1 to 6
Details
You can use this command to place each digital I/O line into one of the following modes:
• Digital open-drain, output, or input
• Trigger open-drain, output, or input
• Trigger synchronous master or synchronous acceptor
A digital line allows direct control of the digital I/O lines by writing a bit pattern to the lines. A trigger
line uses the digital I/O lines to detect triggers.
The following settings of lineMode set the line for direct control as a digital line:
• digio.MODE_DIGITAL_IN: The instrument automatically detects externally generated logic
levels. You can read an input line, but you cannot write to it.
• digio.MODE_DIGITAL_OUT: You can set the line as logic high (+5 V) or as logic low (0 V). The
def
ault level is logic low (0 V). When the instrument is in output mode, the line is actively drive
n
hi
gh or low.
• digio.MODE_DIGITAL_OPEN_DRAIN: Configures the line to be an open-drain signal. The line
c
an serve as an input, an output or both. When a digital I/O line is used as an input in open-drai
n
m
ode, you must write a 1 to it.
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